So you rooted? But no longer want root? or want to downgrade to 1.5 with an ruu? or want to flash one of the PB00IMG like the root one with an engineering bootloader?
Tonight I made another custom misc.img, it is attached to this post. You will also need flash_image which can be found here. http://www.multiupload.com/KS2JCAMGBH
Run these commands as root:
adb push flash_image /data/local/flash_image adb push misc.img /data/local/misc.img adb shell chmod 777 /data/local/flash_image adb shell /data/local/flash_image misc misc.img