You have your original O2 rom for RSD Lite ?
If yes, unzip it, open XML file
Here a exemple :
Code:
<?xml version="1.0" encoding="UTF-8"?>
<flashing>
<header>
<phone_model model="VANQUISH_U" />
<software_version version="XT925_vffr-user 4.1.2 9.8.2Q-8-XT925_VQUL-16 1354498168 release-keysVANQUISH_U_BP_100700.250.66.01P" />
<interfaces>
<interface name="AP" />
</interfaces>
</header>
<steps interface="AP">
<step operation="getvar" var="max-download-size" />
<step operation="oem" var="fb_mode_set" />
<step operation="flash" partition="partition" filename="partition_signed" MD5="374c5ce95704791927c2b72543cc7f16" />
<step operation="flash" partition="sbl1" filename="sbl1_signed" MD5="04faedb3ac5e2401f233856b801eab73" />
<step operation="flash" partition="sbl2" filename="sbl2_signed" MD5="131ff66e7d861bfedfd2c7b5ca428381" />
<step operation="flash" partition="sbl3" filename="sbl3_signed" MD5="52bafe485a64f12ed2fda312c60f0a34" />
<step operation="flash" partition="rpm" filename="rpm_signed" MD5="919d0b340cfdd5fc7c541803db65c2d6" />
<step operation="flash" partition="tz" filename="tz_signed" MD5="ed1c505e36e769ccf0bb3c10e46dd62b" />
<step operation="flash" partition="aboot" filename="aboot_signed" MD5="61ddd4c78a3d1ff64567740446f803fd" />
<step operation="flash" partition="modem" filename="modem_signed" MD5="af7fa6a2a496fe4d89778829bf40bb4a" />
<step operation="flash" partition="fsg" filename="fsg_signed" MD5="74031834280d2e5cec7f40d620c4024d" />
<step operation="erase" partition="modemst1" />
<step operation="erase" partition="modemst2" />
<step operation="flash" partition="logo" filename="logo" MD5="6463dc057abf889f3b83a4d3da4cdd1e" />
<step operation="flash" partition="devtree" filename="devtree_signed" MD5="7d0c02350ac2b47bc17aa963f8cafcd9" />
<step operation="flash" partition="boot" filename="boot_signed" MD5="5d27060578eca132919570e9208885e4" />
<step operation="flash" partition="recovery" filename="recovery_signed" MD5="21cdb4fd40b8d9ebb9aa9565c68eeb5f" />
<step operation="flash" partition="system" filename="system_signed" MD5="fd6b6dc463e2a03b8d507eb51e7eda8b" />
<step operation="flash" partition="cdrom" filename="cdrom_signed" MD5="db97fe7f66377bf706e8263007ca4a53" />
<step operation="erase" partition="tombstones" />
<step operation="erase" partition="cache" />
<step operation="erase" partition="userdata" />
<step operation="oem" var="fb_mode_clear" />
</steps>
</flashing>
Remove from it the following lines :
<step operation="getvar" var="max-download-size" />
<step operation="flash" partition="logo" filename="logo" MD5="6463dc057abf889f3b83a4d3da4cdd1e" /> (if your bootloader is unlocked and you flashed custom boot logo. And don't want it to be restored to WARNING UNLOCKED BOOTLOADER)
<step operation="flash" partition="recovery" filename="recovery_signed" MD5="21cdb4fd40b8d9ebb9aa9565c68eeb5f" /> (Remove if if you are unlocked and have a custom recovery like CWM)
<step operation="erase" partition="userdata" /> (VERY IMPORTANT, WITHOUT REMOVING THIS LINE, YOU LOST ALL YOUR DATA)
Exemple when all stuff removed :
Code:
<?xml version="1.0" encoding="UTF-8"?>
<flashing>
<header>
<phone_model model="VANQUISH_U" />
<software_version version="XT925_vffr-user 4.1.2 9.8.2Q-8-XT925_VQUL-16 1354498168 release-keysVANQUISH_U_BP_100700.250.66.01P" />
<interfaces>
<interface name="AP" />
</interfaces>
</header>
<steps interface="AP">
<step operation="oem" var="fb_mode_set" />
<step operation="flash" partition="partition" filename="partition_signed" MD5="374c5ce95704791927c2b72543cc7f16" />
<step operation="flash" partition="sbl1" filename="sbl1_signed" MD5="04faedb3ac5e2401f233856b801eab73" />
<step operation="flash" partition="sbl2" filename="sbl2_signed" MD5="131ff66e7d861bfedfd2c7b5ca428381" />
<step operation="flash" partition="sbl3" filename="sbl3_signed" MD5="52bafe485a64f12ed2fda312c60f0a34" />
<step operation="flash" partition="rpm" filename="rpm_signed" MD5="919d0b340cfdd5fc7c541803db65c2d6" />
<step operation="flash" partition="tz" filename="tz_signed" MD5="ed1c505e36e769ccf0bb3c10e46dd62b" />
<step operation="flash" partition="aboot" filename="aboot_signed" MD5="61ddd4c78a3d1ff64567740446f803fd" />
<step operation="flash" partition="modem" filename="modem_signed" MD5="af7fa6a2a496fe4d89778829bf40bb4a" />
<step operation="flash" partition="fsg" filename="fsg_signed" MD5="74031834280d2e5cec7f40d620c4024d" />
<step operation="erase" partition="modemst1" />
<step operation="erase" partition="modemst2" />
<step operation="flash" partition="devtree" filename="devtree_signed" MD5="7d0c02350ac2b47bc17aa963f8cafcd9" />
<step operation="flash" partition="boot" filename="boot_signed" MD5="5d27060578eca132919570e9208885e4" />
<step operation="flash" partition="system" filename="system_signed" MD5="fd6b6dc463e2a03b8d507eb51e7eda8b" />
<step operation="flash" partition="cdrom" filename="cdrom_signed" MD5="db97fe7f66377bf706e8263007ca4a53" />
<step operation="erase" partition="tombstones" />
<step operation="erase" partition="cache" />
<step operation="oem" var="fb_mode_clear" />
</steps>
</flashing>
Now flash it with RSD lite (point XML file with RSD Lite) and cross fingers.
Edit : Or you can do the minimum :
Take system_signed file and flash it with fastboot in AP :
fastboot.exe flash system system_signed