I have to unroot to send back the phone for my replacement and have tried everything. The method of downloading pbooimg.zip and going into hboot didn't work. It says the main version is older update fail. I checked the md5 sum and byte size with astro file mngr and it was correct. I tried downloading a retro rom and then downloading system update but when i try to install it it says something about no signature and does not work. The post about the official verizon ruu 2.1 wont work because conflipper isn't there anymore due to legal issues or something. Am i stuck with a broken phone?