Bootloop using Sony Xperia Arc S (LT18i) 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?
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: 


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.
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.
Following this link I could type in my IMEI number (without the last cypher !! - that means only 14 cyphers - and without the hyphen).
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.)
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.
I restarted the phone, and then Android 4.0 was working again !!