[Q] [Request] Help with Root, Unlock, S-OFF, and Tamper topic

This the only phone I've ever had a problem with, and I am asking for some help from the community.

I've got a Cricket HTC One SV. K2_PLC_CL. Android 4.2.2, which should be Jellybean.

I just wanted to get root. I know there aren't any custom ROMs (what I wouldn't give to remove all the bloatware, though...)

I followed a few guides that I'm sure everyone's looked at. My bootloader IS unlocked. When I tried flashing a recovery (I have two or three to try, one's even labelled for Cricket. They're CWM, though), I was unable to boot into it to install Superuser. Since then, I've earned the "TAMPERED" flag.

Have I done something terribly wrong? Can someone please instruct me on how to get root, and to fix my recovery?
Since I somehow managed to fail, I would be extremely appreciative if someone would be so kind as to spell it out, or just give me step-by-step instructions.

Since booting into recovery, my phone freezes if I shut it down while it's plugged into the charger... Oddly enough.

Reset Tamper Flag topic

I RMA'd my device and need to reset the tamper flag. I followed the instructions here in the forums, but it is not working. I've tried 2 different methods.

1) Download the flashable zip file and use fast boot to boot into TWRP. The problem with this is that once i boot into TWRP, it does not recognize any files in the sdcard/downloads folder.

2) Download boot unlocker from the playstore. I need an unlocked and rooted device so this seems pointless as I will need to unlock and relock my boot loader to use this.

Someone please help.