I've spent the last 6 hours attempting to fix it, after spending 3 hours getting it onto the new network.. Posting this finally as a last resort..
...My previous phone stopped working, so my father gave me his old Sprint HTC Evo 4G. Called Straight Talk, Sprint, Father, Father's Boss (business line, needed pet's first name), Sprint, Straight Talk, paid $15 fee, activated!! Messages come in, 3G data shows, call works.
After a few minutes, I restart the phone as suggested, and BAM!, it begins to restart, and restart, and restart. I decide it must be Sprint bloatware attempting to do Sprint things, so I must root, ROM, and de-bloat.. I was able to get Smelkus Recovery working and flashed Classic v0.1.0 ROM, but it still reboots in 3-5 seconds after successfully starting. I have yet to ninja-in Airplane Mode again, but will try more later as the battery is low (seems it may need to be reset/calibrated)
Please, any and all help would be very much appreciated.. I cannot spring for a new phone right now and I really need to get phone access back online.
Thank you for your time
Well, things start to get worse.. Soon enough, it won't even get past the HTC initial power-on screen. I still have access to fastboot, but cannot access stock then Smelkus recovery (starts HTC startup screen loop), nor reach the Sprint start-up screen.
I successfully unlocked the HBoot via HTCDev, then began to attempt to get an actual start by trying to run a few old RUU (signature fails) and flashing manually as another suggested each partition (got boot, radio, userdata, then system.img data length too large).
Still stuck at HTC EVO 4G loop. My biggest obstacles are broken links to builds and lack of complete information about solutions..
Here is my Hboot info:
*** UNLOCKED *** SUPERSONIC EVT2-2 SHIP S-ON HBOOT-2.18.0001 MICROP-041F TOUCH PANEL-ATMEL224-16ab RADIO-2.15.00.01.15 Dec 21 2011,12:50:32