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Hey guys so I'm in boot loop. Yes I know there are many guides all over saying how to fix it but I have tried many of them and they didnt work.

What happens is I start the phone, it shows the boot image and then restarts after a time.

I can boot into the Recovery mode by spamming the back button when the Logo comes. And can install zip files from the SD card. I also have tried flashtool to restore it to stock but when i try flashing it detects my device "Device connected in flash mode" but when i try toflash it, it gives an error "Error flashing. Aborted".

Any help?

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Have you tried to clear the caches (e.g. from within the recovery menu)? A last ressort would be a factory-reset, if wiping cache & dalvik does not help. – Izzy Apr 8 '13 at 5:48
    
done all of those as well – Exikle Apr 8 '13 at 6:30
    
Including a factory reset? Then maybe you've flashed an incompatible ROM? – Izzy Apr 8 '13 at 6:32

I have just repaired the boot loop of my Sony Ericsson Xperia Arc (LT15i, boot loop caused by activating Bluetooth !!) just by unlocking the bootloader of my phone - by following these steps:

  1. I retrieved the IMEI-Number of my phone. It's on the sticker under the battery - it's the 15-cypher-number beside the serial number.

  2. I went to http://developer.sonymobile.com/unlockbootloader/ - selected my phone type, input an email address, and received a unique link from Sony by doing so.

  3. Following this link I could type in my IMEI number (without the last cypher !! - that means only 14 cyphers - and without the hyphen).

  4. The website emitted a code and a software line like this one:

    fastboot -i 0x0fce oem unlock 0xTTTTTTTTTTTTTT
    

    (All the T's stand for the code, the rest has to be typed in like this.)

  5. I copied the above line in the program fastboot (check elsewhere to learn how to work with this program and your phone). I typed in the above line given from the Sony website. After a few seconds the bootloader was unlocked.

  6. I restarted the phone, and then Android 4.0 was working again !!

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Try reflashing your custom ROM and clear Dalvik and Cache and do a factory reset after that . And make sure you are flashing a ROM compatible to your device.

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Repair via SUS.

  1. Install SUS
  2. Connect your phone
  3. Select your phone from SUS
  4. Follow the instruction
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