Present unlock bootloader from firmware V30B.
This is bootloader was unlocked user nikname payback from russian forum 4pda.ru and make on IDA Pro disassembler, an analog unlock bootloader on LG Optimus L7
This full work with original kernel.
Dont enter into recovery before flash it!
Enter in recovery from switch off the phone
Press hold button Volume plus and G, and press Power.
Unlocked bootloader correctly working with CWM 220.127.116.11 only
Move this two files, bootloader and recovery to the root of memory sdcard;
Enter in the command line
dd if=/sdcard/u-boot.img of=/dev/block/mmcblk0p2
dd if=/sdcard/recovery.img of=/dev/block/mmcblk0p4
And reboot or reboot recovery.
Or download exe file, and switch on usb debugging mode on the phone and start exe file.
Patching firmware V30B CIS for SFT with add unlock bootloader and CWM recovery is here: http://disk.yandex.ru/public/?hash=M...pxcqWr%2BjM%3D.
This firmware without root. Superuser in attach. Flash in CWM.
Sorry for my English.