####Un-Root Accept HTC OTA, then Re-Root Again, In 15 Minutes
Download: http://goo-inside.me/shooter/ruu/2.08.651.2
Rename the file to PG86IMG.zip then mount phone as drive and copy zip file to /sdcard/
Then open cmd prompt (Win32) or terminal (Linux/OSX) and carefully type:
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adb reboot bootloader
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fastboot oem lock
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Phone will automatically unzip and when it asks to install hit Volume+ (Hit volume up key to install)
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Start phone and run updates a few times till you have all of the OTAs.
To Re-Root:
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adb reboot bootloader
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Go to whatever folder you have your Unlock_code.bin that you got from unlocking the first time (http://HTCdev.com, you saved it right?)
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fastboot flash unlocktoken Unlock_code.bin
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Oh yeah, you are root again!
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flash a custom recovery (TWRP, or ClockworkMod)
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Flash ROM of choice if you desire.