My phone is an HTC Evo V 4G through Virgin Mobile, however this replacement has a Sprint logo in the top right corner of the screen...
Android 4.0.3 Software# 2.95.652.6 710RD
*** UNLOCKED *** SHOOTER XC SHIP S-ON RL HBOOT-1.58.0000 eMMC-boot May 17 2012,15:06:44
I've been using the directions from this page: http://forum.xda-developers.com/show....php?t=1239821
I didn't use the 2.08 RUU that's listed there because I didn't think I'd need it. I unlocked my phone, signed my name in blood on the warranty loss contracts, and sent over the su-126.96.36.199.zip and the recovery.img. At first I used the recovery that JTNiggle had and encountered the error. Then I renamed TWRP's updated recovery for the CDMA Evo 3D to recovery.img and sent it over with adb. Again, same error. Then I sent over the un-renamed updated TWRP recovery and tried installing that, and again, same error.
The error in question:
C:\Program Files (x86)\HTC\HTC Sync 3.0>fastboot flash recover openrecovery-twrp -188.8.131.52-shooter.img sending 'recover' (5052 KB)... OKAY [ 1.183s] writing 'recover'... (bootloader) signature checking... FAILED (remote: signature verify fail) finished. total time: 2.018s