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I'm looking for an experienced programmer to develop RF modules based on MTK chips. The primary functionality required is signal reception, specifically for digital signals. This project extends to firmware modification for new hardware of the F21 Pro model, adapting it to work with US bands and ensuring wide usability. Key Requirements: - Modify NV data in the firmware to suit the new chipset (likely running on LWTG) and adapt this file for US band compatibility. - Ensure the firmware can be flashed easily to multiple phones and that a complete backup source file is provided. - Conduct thorough compatibility testing for the firmware. Ideal Skills and Experience: - Strong background in RF engineering and programming. - Expertise with MTK chipsets and NV data modifications. - Experience in firmware adaptation for telecommunications devices. - Knowledge of digital signal protocols, processing techniques, and U.S.-specific band requirements. Please provide examples of similar projects you’ve completed. here is a link to the full chinese firmware that will need modification if anyone wants to see it. It will need to be changed and calibrated for USA Carriers I believe the FCC can give you the band requirements. [login to view URL]
Project ID: 40207843
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29 freelancers are bidding on average $452 USD for this job

Hello, As a seasoned professional with expertise in both the telecommunications and embedded systems realms, I believe I am uniquely suited to take on your project. With a strong background in RF engineering and programming, including NV data modification on MTK chipsets, I have the technical know-how necessary to adjust the firmware of your F21 Pro model for US band compatibility. What sets me apart is my familiarity with adapting firmwares for specific telecommunications devices - an invaluable skill for ensuring that your device works optimally across different carriers. Additionally, my in-depth knowledge of digital signal protocols and processing techniques will be instrumental in meeting your primary requirement of signal reception for digital signals. On practical terms, I am well-experienced with conducting thorough compatibility testing and providing complete backup source files, ensuring seamless firmware flashing across multiple phones. My ultimate aim is to turn your research project into reality while ensuring your utmost satisfaction throughout the process. Choose me for a high-quality, comprehensive approach that delivers results! Thanks!
$750 USD in 1 day
8.3
8.3

I have a strong passion for RF engineering and firmware modification, making me the perfect fit for your project. My expertise spans designing and adapting firmware for various telecommunications devices, which includes precisely the sort of changes your MTK chip-based project requires. Moreover, with a comprehensive understanding of digital signal protocols and processing techniques along with specialized knowledge on US-specific bands, I can ensure not only wide usability for the F21 Pro model but also its smooth operation in alignment with US carriers' band requirements. An exemplary project similar to yours that I've recently executed involved modifying firmware on a MIPS-based embedded system for improved Ethernet connectivity. This availed me valuable insights into embedded firmware modification processes. Besides, my proficiency in software integrations facilitates easy flashability of provided firmware on multiple phones while also ensuring every step is well-documented to guarantee thorough source file backups.
$350 USD in 3 days
6.3
6.3

Hi there, I’m confident I can adapt MTK-based RF modules for US bands on the F21 Pro, with NV data edits, firmware tweaks, and a reliable flash process for multiple devices. I’ll study the Chinese firmware you linked, map the NV items to modify for the LWTG path, implement US-band calibration, and deliver a backup source file plus a repeatable flashing procedure. I’ve completed similar MTK RF firmware projects, including NV edits and US-band calibration, plus detailed testing plans and clear release notes. You’ll get a tested, flashable build, documentation, and a practical testing plan covering major US carriers. If you want, I can share a brief milestone plan with dates. 1) Confirm exact MTK chipset model and hardware revision used in the F21 Pro, and the current NV mapping. 2) Which NV items must be modified to enable US band support (bands, TA/NR, etc.)? 3) Are we allowed to modify FCC-related calibration data, and do you have any FCC test results or docs we can base calibration on? 4) Will you provide the original firmware backup and a copy of the flashed ROM for reference? 5) Do we need a full backup source file and a tested flashing toolchain that works across multiple devices? 6) What is the expected testing plan and success criteria (lab tests, OTA tests, carrier verification, etc.)? 7) Any restrictions on distributing modified firmware or using third-party tools? 8) Do you have a preferred development environment, toolchain, or MTK SDK version? 9) What is t
$750 USD in 17 days
6.0
6.0

Hello! We are skilled RF module developers specializing in MTK chipset programming. Our expertise lies in modifying firmware for the F21 Pro to support US bands and digital signal reception. Using LWTG, we'll tailor the NV data for seamless compatibility, ensuring easy flashing to multiple devices. Rigorous testing will guarantee firmware reliability. With a proven track record in RF engineering and MTK chipsets, we excel in adapting firmware for telecommunications devices. We're ready to tackle the FCC band requirements for U.S. carriers effectively. Let's discuss further.
$250 USD in 2 days
4.7
4.7

Hello sir, MTK RF firmware work isn’t just editing an NV file its making sure band configuration, RF calibration, and flashing workflows stay stable without breaking compliance. Well, what I can do for you as Programmer and a Telecommunication engineer with 8 years of experience is handle this project in a legal, standards-compliant way i.e. review your F21 Pro hardware variant and the provided China firmware package, confirm what the MTK modem/RF front-end can truly support, then prepare a repeatable firmware and NV configuration workflow with proper backups and a structured compatibility test plan. If the device is intended to operate on US carrier bands, I will also align the work to an FCC/certification pathway (because changing RF band behavior without certification can make the device non-compliant). In fact, I’ve worked on Telecom focused embedded workflows where the real value is identifying exactly what can be changed safely, creating a clean restore and mass-flash process, and validating behavior with measurable tests instead of assumptions.
$250 USD in 7 days
4.8
4.8

Best RF Module & MTK Chipset Development Partner ⭐⭐⭐⭐⭐ Hi, Thank you for posting your project, “RF Module Developer for MTK Chipset.” I’ve carefully reviewed the requirements, and I’m confident in my ability to successfully deliver this project. I bring 11+ years of experience in RF engineering, MTK chipsets, NV data modification, band calibration, and U.S. carrier compliance, and I can share relevant project examples upon request. ✅ How I’ll Help You Succeed 1. Analyze the existing Chinese system image and review the current NV configuration and RF parameters. 2. Modify NV data to support U.S. frequency bands and carrier compatibility in line with FCC requirements. 3. Ensure the system can be easily flashed to multiple devices, with a complete backup and recovery source provided. ✅ Before I start, one quick question: Do you already have a preferred U.S. carrier target list (e.g., AT&T, T-Mobile), or should the solution be optimized for maximum multi-carrier compatibility? Once aligned, we can move forward efficiently. Best regards, Prat PCB Must Innovations
$500 USD in 4 days
6.3
6.3

Hello, I’m an embedded systems and RF firmware developer with 7+ years of experience working on MTK-based platforms, including RF calibration, NV data modification, and regional band adaptation for telecom devices. I’ve completed 9+ firmware adaptation projects for MTK chipsets, with 5 involving RF/NV tuning to enable compatibility across different country band requirements, including U.S. carrier standards. For your F21 Pro project, I would analyze and modify the NV data (LWTG-based) to align with U.S. frequency bands, followed by controlled RF calibration to ensure stable digital signal reception. I’ve previously delivered firmware packages that were flashable across 50+ devices, each with full backup images and documented recovery procedures to prevent device bricking. My workflow includes systematic compatibility testing (band validation, signal stability, and boot integrity) and verification against carrier and FCC-referenced band specifications. I’ve worked extensively with digital signal processing, BLE, and RF front-end behavior on MTK hardware, ensuring both performance and compliance. You’ll receive modified firmware, backup source files, flashing instructions, and test notes, ready for repeated deployment. I’m happy to review the provided Chinese firmware and confirm whether additional RF calibration data is required beyond NV edits. Best
$500 USD in 7 days
4.4
4.4

✅Okay, I got what you want exactly. I am a Senior RF & Embedded Firmware Engineer with over 10 years of experience, providing MTK chipset development, RF calibration, NV data modification, digital signal processing, and telecom firmware adaptation. In my opinion, the key to this project is selecting the correct RF configuration strategy for U.S. bands and carefully recalibrating NV parameters to match carrier requirements while maintaining signal stability. I would focus on clean firmware restructuring so the result is scalable, flashable across multiple devices, and easy to maintain or re-certify later. This project is very similar to my previous works. I have modified MTK-based LTE/VoLTE firmware for regional band compliance, including NV table edits for over 20 RF parameters and baseband calibration using factory test modes. I’ve also adapted Asia-market devices to North American bands, validated RF performance with spectrum analysis, and delivered full flashable images with rollback backups. ✅ So, I will divide your project like following: ⚡ Firmware and NV data analysis for the F21 Pro MTK platform ⚡ U.S. band mapping, RF calibration, and NV parameter modification ⚡ Firmware rebuild, flashing workflow setup, and backup image creation ⚡ Compatibility testing across U.S. carrier bands and stability validation Best regards, Yaroslav
$500 USD in 7 days
3.5
3.5

Hi, This is Mohand, a talented electrical engineer and RF developer with extensive experience developing RF modules based on MTK chipsets for US carrier compatibility across multiple F21 Pro firmware adaptations. I'll modify the NV data in your Chinese firmware for LWTG chipset, recalibrating band configurations (B2/B4/B5/B12/B66 primary) to ensure seamless US carrier operation while maintaining digital signal reception integrity and wide phone compatibility. My proven track record includes 25+ MTK firmware modifications with NV item calibration, easy SP Flash Tool flashing procedures, and complete backup source files that passed carrier certification testing without issues. Using specialized MTK tools and FCC band requirement analysis, I'll deliver thoroughly tested firmware with compatibility verification across major US networks (AT&T, Verizon, T-Mobile)
$500 USD in 7 days
3.0
3.0

Hi, I went through your project carefully, and the core challenge is clear: developing RF modules for MTK chipsets requires precise firmware modifications for US band compatibility. This isn’t a surface-level task , it needs someone who understands RF engineering intimately to execute without hand-holding. I’ve handled similar work where precision and reliability mattered. My approach involves directly modifying NV data for LWTG firmware, ensuring it supports flashing across multiple devices while maintaining comprehensive backup protocols. I will also conduct thorough compatibility testing to ensure robustness. If this aligns, I can start immediately and deliver a fully tested firmware solution within 10 days. One quick question before I proceed: Have you established specific US band requirements from the FCC? Best regards, Muskan
$250 USD in 2 days
2.0
2.0

✅✅✅ RF Firmware & MTK Platform Engineer ✅✅✅ Hi there, I have hands-on experience developing and modifying RF firmware on MTK chipsets, including NV data tuning, band configuration, and calibration for regional compliance. I’ve adapted telecom firmware for new hardware revisions, ensuring stable digital signal reception and repeatable flashing across devices. My approach is to analyze the existing firmware and NV structure, update band tables and calibration data for U.S. carrier requirements, then validate performance through compatibility and regression testing. I’ll deliver flashable images with full backups and clear deployment steps. A few questions: Which MTK SoC is used in the F21 Pro? Are target U.S. carriers specified? Is FCC certification support expected beyond band configuration? I am ready to start immediately. Best regards
$250 USD in 2 days
2.7
2.7

Hi, there! With over 10 years of experience in Electronics and Microcontroller programming, I am well-equipped to handle your RF module development project based on MTK chips. I understand the requirements for modifying the firmware for the F21 Pro model to work with US bands, ensuring broad usability and signal reception for digital signals. I have successfully completed over 50 Desktop/Mobile applications and Embedded software projects, showcasing my expertise in this area. I would love to discuss your project further to provide a tailored solution that meets your needs. Let's connect in the chat to delve deeper into your project requirements. Thanks
$500 USD in 7 days
0.0
0.0

Hello! As an experienced RF module developer, I can provide expertise in developing RF modules based on MTK chips. Based on your project details, I understand the need for modifying the NV data in the firmware to adapt to the new chipset and ensure US band compatibility, especially for digital signal reception. My relevant experiences include working extensively with MTK chipsets, firmware adaptation for telecommunications devices, and knowledge of digital signal protocols. Looking forward to working with you to optimize the firmware for the F21 Pro model. Thank you, Ihor
$250 USD in 4 days
0.0
0.0

Hello,there Thank you for posting your project, "RF Module Developer for MTK Chipset." I've read the description carefully and am confident that I can successfully complete this project. I have over 7 years of experience in Electronics, Microcontroller, Electrical Engineering, Telecommunications Engineering, Bluetooth Low Energy (BLE), Embedded Systems, Signal Processing, Digital Signal Processing. I have done some projects as smiliar as this one. I can share my previous project experience if you'd like. I enjoy learning new technologies and taking on challenges, even those that seem impossible. I'm very interested in this project and am confident that I can deliver the best results possible without stress. I look forward to working with you. Best regards, Boris
$350 USD in 5 days
0.0
0.0

Hello there! I am ready to take on the project and develop RF modules for the MTK chipset. My experience in RF engineering and firmware adaptation allows me to address signal reception specifically tailored for digital signals, ensuring compatibility with US bands for the F21 Pro model. I will modify the NV data in the firmware to align with the new chipset and facilitate easy flashing to multiple phones. Conducting thorough compatibility testing and providing a complete backup source file will be integral to my process. Rest assured that I will handle the technical aspects, incorporating signal processing techniques suitable for U.S. requirements. Your project will be executed with the utmost professionalism. Could you specify any additional requirements for compatibility testing? I look forward to collaborating on this exciting project!
$250 USD in 2 days
0.0
0.0

⭐⭐⭐⭐⭐ ✅Hi there, hope you are doing well! I have successfully developed RF modules and modified firmware for MTK chipsets in past projects, enabling seamless signal reception and digital signal processing for telecommunications devices. From my experience, the most critical part of this project is precise NV data modification and calibration to ensure the firmware supports US bands and complies with FCC requirements. Approach: ⭕ Analyze the existing Chinese firmware and NV data. ⭕ Modify NV data for US band compatibility based on FCC guidelines. ⭕ Adapt firmware for LWTG and ensure it is flashable across multiple devices. ⭕ Conduct comprehensive testing for compatibility and signal reception quality. ⭕ Provide a complete backup source file and documentation. ❓ Could you clarify the specific US carriers or bands you want prioritized? ❓ Is there existing documentation for the NV data structure or LWTG environment? ❓ Are there any additional features or customizations needed beyond band adaptation? I am confident in delivering a robust firmware modification tailored to your MTK chipset requirements quickly and efficiently. Best regards, Nam
$550 USD in 5 days
0.0
0.0

Hello, How are you? I have checked your job description and I’m confident I can completed exactly what you need. My extensive experience with RF engineering and programming, particularly with MTK chipsets, makes me an ideal candidate for this project. I have worked extensively on modifying NV data for hardware adaptations, ensuring compatibility with U.S. bands. I understand the intricacies involved in firmware modification and testing, especially with telecommunications devices. My previous projects required similar adaptations for digital signals, and I am adept at conducting thorough compatibility testing to ensure reliability across devices. Please send me a message so that we can discuss more. Thanks.
$750 USD in 7 days
0.0
0.0

Navigating the project's path, the first step would be a deep dive into the specifics of the MTK chipset and the original Chinese firmware. We'll dissect the NV data, assess the chipset's protocols, and understand the compatibility requirements for U.S bands. Scrutinizing FCC guidelines will consolidate all necessary data needed to guide the subsequent modification phase. Execution of the firmware modification comes next. I am proficient in manipulating NV data sets, particularly for MTK chipsets. My experience includes work on a LTE-M/NB-IoT SoC project where I modified firmware on an MTK chipset to align with specific telecom frequencies. With keen attention to detail and a comprehensive approach, we'll restructure your firmware to ensure compatibility with U.S bands. Once adaptation of the firmware is complete, the critical step of delivery ensures the firmware's functionality and ease of use. From creating a mechanism to flash this firmware on multiple devices to providing a complete backup source file, I am committed to delivering a fully functional solution. I have done similar work for a smart home device project, where I had to adapt the firmware for mass production and flash it on hundreds of devices. Finally, as a trusted Embedded Hardware Architect, I understand the importance of thorough testing. It isn't just about conformance to standards, but about delivering a product that works flawlessly. I will undertake rigorous compatibility testing, ensuring the firmware works seamlessly with the F21 Pro model and meets U.S band requirements. My work on adapting a Zigbee-based home automation system for the U.S market, where I performed comprehensive testing for FCC compliance and device interoperability, is a testament to my dedication to quality assurance. Rest assured, your project will receive the attention it deserves, ensuring a robust and reliable RF module for your F21 Pro model smartphones.
$500 USD in 7 days
0.0
0.0

As an IoT Systems Engineer & Embedded Firmware Developer, I have successfully modified firmware for a variety of telecommunication devices. In one recent project, I worked on a digital signal processing solution for a client. The task was to adapt the device's firmware to a new ASIC chipset while maintaining compatibility with a variety of signal protocols. The project was demanding because it required extensive knowledge of NV data modifications, U.S. specific band requirements, and signal reception. In the end, I successfully modified the firmware and tested it thoroughly, ensuring the device had excellent compatibility across multiple signal protocols. An essential takeaway from this project was that comprehensive testing is critical to ensure firmware operates correctly across various bands. For your project, my plan is to begin with the firmware modification for the F21 Pro model by adapting the NV data for the new MTK chipset. As an engineer who is familiar with LWTG, I can ensure a smooth transition, matching the requirements for US bands. My experience in designing and developing IoT systems will contribute to making the firmware easily flashable to multiple phones. After the firmware modification is complete, I will conduct an extensive compatibility test. This step is crucial to validate that the firmware works well with the new chipset. This process would involve robust simulations and real-life tests for signal reception. Moreover, I'm going to provide a complete backup source file at the end of the project, as per the mentioned requirements. My goal is to deliver a firmware solution that is ready for integration and ensures broad usability. While at it, rest assured that I will comply with all FCC regulations related to band requirements. I believe my skill set and experience align perfectly with your project's needs, and I look forward to the possibility of working together.
$500 USD in 7 days
0.0
0.0

Given your project's ambitious scope, you might be understandably concerned about finding a freelancer with the niche, nuanced skillset required. This is certainly specialized work, requiring expertise both in RF engineering and in adapting firmware to new hardware, notably the F21 Pro model. I can confidently say that your project aligns perfectly with my professional background as an Electronic Systems Designer and Embedded Integration Specialist. With a firm grasp on RF programming, I've been involved in similar projects where I developed RF modules based on MTK chipsets. In particular, I have adapted NV data to suit different chipset configurations, making them compatible with various geographical bands. You will also appreciate my experience in firmware modification. I have worked extensively on adapting firmware for telecommunications devices, ensuring the smooth integration of hardware and software. Furthermore, I have leveraged my knowledge of digital signal protocols and processing techniques to ensure that devices meet specific band requirements, just as you require for the US market. Lastly, I acknowledge the need for thorough compatibility testing for the firmware. I assure you that I’ll conduct rigorous testing to ensure the firmware is reliable and functional across multiple phones, with the final product accompanied by a complete backup source file. I look forward to the opportunity of further discussing how my background and skills can serve your project needs. It is my aim to not only meet but exceed your expectations, delivering a product that is effective, reliable, and fully optimized for the US market.
$500 USD in 7 days
0.0
0.0

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