Unlock Bootloader Xperia X10

If you aren't keeping your current device configuration (because of flashing another rom after unlocking bootloader or anything else) the simplest way to unlock is to flash stock 2.3.3 rom, root it and use the bl unlock plugin from latest flashtool Hi guys, cause it was asked for, here is a how-to to unlock bootloader without reflashing a 2.1 firmware what means no need of reinstall your current rom after unlocking bootloader. In the archive with the unlocking files take care about the following: the semc bat is for x10i and x10a. But only if you haven't tried any simunlocking the setool2 bat is for all those have simunlocked using the setool2 If you don't know it, or not sure about, have a look at the 2nd post, there you'll find a tool to test it. for those doesn't fit any of those two critericas, don't try to unlock bootloader with this steps/files linked here Things you need: Unlocker bootloader [login to view URL] Kernel up/downgrade for flashtool from here: - thanks to azuzu Kernel Downgrade Kernel Upgrade A custom kernel, for now there are two from which you can choose: Recomends DoomKernel v06 If you haven't all the listed things on your computer, then first downoad all neccessary files I have listed above before you go on with the guide how-to do it!! Please make sure you have enabled usb-debugging in your current rom before starting with this!! Flash the azuzu kernel downgrade ftf with flashtool disconnect usb cable, press power button until phone vibrates shortly and immidiatly connect the usb cable again (it is supposed to be stuck at SE logo) start the batch file for unlocking bootloader, cause it says press any button before it starts, it won't start unlocking until you press any button now wait until flashtool recognizes your x10 (if flashtool doesn't do anything, check third post please! thx) close flashtool and then press any button in the cmd window that the unlocking process starts (please close flashtool, instead the bl unlock cmd and flashtool are constantly killing and restarting adb!!) after unlocking is finish you have to flash azuzu kernel upgrade now power on phone to check if the phone is starting after the unlock (if you are using a custom kernel yet with the bypass method and get stuck in a bootloop enter xrecovery and clear dalvik-cache, then your phone should boot up again fine) power off phone and flash dooms ck v05-fs with flashtool now flash the wifi modules for dooms ck with recovery. (atm the [login to view URL] are for xrec, but for sure please always check dooms kernel-thread if there is anything changed) power on phone again and if everything is right, read the line under that one WOOOHOOO!!! Here you are with unlocked bootloader, custom kernel directly loaded AND without reflashing any rom, means you have kept your current installation If you aren't seeing the se logo at turning on phone, but directly the custom kernel logo, you were succesfully. If you want to enter xrecovery you have to spam the back button now if the xperia logo appears instead of the se logo. For testing if you are ready for unlocking bootloader or not, use this tool: S1tool If you can find semc simlock certificate in one of the last lines from the output, you can unlock your bl with the *[login to view URL] file If you can find anything with setool2 in one of the last lines from the output, you can unlock your bl with the *[login to view URL] file If you can't find any of these two and see instead s.th. like unknown simlock certificate or similar, you can not unlock your bl. In this case, first simunlock your bl with setool2, then check again with s1tool. s1tool can also relock your bl if you want to make use of your warranty.