U hav corrupted ur recovery
.
Download and Install cwm v5 (available in this forum)
..
Download & Install stock rom
(available in this forum)
..
Flash stock rom using adb via windows pc..
..
Make sure u have android sdk,
java sdk,
a87 drivers installed on ur pc..
..
To connect..switch off ur phone..
Hold volume up button..and power button..<phone wil b stuck at boot screen>
this is fastboot mode on ur a87
..
connect ur phone then to the pc!
..
It wil detect (if not..then pull battery..reboot normally and then connect to install ur drivers)
..
open cmd on windows..
Type "cd <directory of ur adb files>"
example
my adb files are in a folder called android in d drive
then i type
"d:\android\"
..
..now..
Type fastboot flash <location of d stock rom in ur pc>
example..i had my stock rom named update.zip in d drive
..i typed "fastboot flash d:\update.zip"
..
It will flash it..and then type
"fastboot reboot" and ur phone restarts..
hit thnx if it helped