Ok so either method I use gives me the signature verification failed Installation aborted. do I need to use a different rom?
The only thing that would cause that is if the recovery used a different testkey for the signature verification, which would not make since the testkey is only 4 years old and is the OTA one in source builds, and I know that mrg666 ROMS are singed with the right testkey. The only other thing it could be is a bad download.
Update. I was able to get it to run through the install process with the BACKside-IHO-VM670 rom but it is still booting into recovery
I:checking for extended command, file not found...
mtd: successfully wrote block at c2a6800000000
I:set boot command ""