“ Originally Posted by xxdbkxx 
”
As noted in my first post, .37 is what I was attempting to use when I got the AthenaWrapper error.
It was the SSPL-Manual.exe on the SD card that got me to the rainbow screen. I tried that route due to: "NOTE 2: anyone having problems with the device entering SSPL automatically, please copy SSPLManual.exe from the SSPLManual.zip attachment to the device and run it. then once the screen is in SSPL, run RUU manually."
Hmmm, did you try running the unlocker after your phone was in the tricolor mode? I ran the .37 so your text is different from mine. But it does say security unlocked, which it should. Try running it while in bootloader and see what happens