deaddeamon
Newbie
i just found something on the xda forum

sorry if i posted this in a wrong section
im going to try it and then tell everyone how this works!!!How to update to OTA without updating hboot
Instruction for S_OFF 4EXT RECOVERY : (Thanks anryl)
. Download and copy modified OTA to sdcard.
S_OFF_4EXT_RECOVERY_OTA_SHOOTER_U_ICS_35_S_HTC_Eur ope_3.28.401.1-1.20.401.8_release_2627623qpt0ma8rnwgn0qq.zip
274.43 MB
. Download and copy firmware as PG86IMG.zip to sdcard. PG86IMG.zip 17.70 MB
. From 4ext recovery install the modified OTA
. Go to bootloader and install firmware
BOOT INTO THE NEW UNROOTED OTA ICS
(with new radio old recovery old hboot)
now flash root.zip and that's all folks

sorry if i posted this in a wrong section