FYI, there is already a new release for Zr3d, lol
http://androidforums.com/evo-3d-all...20sb-beats-fast-all-new-ota-2-17-651-5-a.html
http://androidforums.com/evo-3d-all...20sb-beats-fast-all-new-ota-2-17-651-5-a.html
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It's still rebooting and shutting itself down occasionally, though not nearly as often... yet.It's still rebooting and shutting itself down occasionally, though not nearly as often... yet.
Should I un-root/re-root?

Still rebooting or shutting down often. Is there any hope for this phone at this point?
I've been sticking out of this thread as I figured I'd stay out of it while Don was working with you. Here's my suggestion:
Flash the RUU: Goo.im Downloads - Downloading RUU_Shooter_S_Sprint_WWE_1.13.651.7_Radio_0.97.10.0530_NV_NV_SPCS_1.16_release_198109_signed.exe
That is for HBOOT 1.4. If you're on the engineering bootloader (it says HBOOT 1.40.0000 ENG instead of SHIP), then you should go back to the Ship bootloader before flashing a RUU. I didn't do it and it didn't brick my phone, but I guess it can happen. /shrug
After you flash the RUU, you should flash this standalone HBOOT 1.4 build: https://www.box.com/s/8875f2cdef8376d9faab - otherwise fastboot will be all wonky.
Then see if you're stable. If so, flash the new firmware. Repeat. Flash new stock ROM and again see if you're stable. Then try a custom ROM if you're good at that point.
I've been sticking out of this thread as I figured I'd stay out of it while Don was working with you. Here's my suggestion:
Flash the RUU: Goo.im Downloads - Downloading RUU_Shooter_S_Sprint_WWE_1.13.651.7_Radio_0.97.10.0530_NV_NV_SPCS_1.16_release_198109_signed.exe
That is for HBOOT 1.4. If you're on the engineering bootloader (it says HBOOT 1.40.0000 ENG instead of SHIP), then you should go back to the Ship bootloader before flashing a RUU. I didn't do it and it didn't brick my phone, but I guess it can happen. /shrug
After you flash the RUU, you should flash this standalone HBOOT 1.4 build: https://www.box.com/s/8875f2cdef8376d9faab - otherwise fastboot will be all wonky.
Then see if you're stable. If so, flash the new firmware. Verify you're stable, for at least a day. Flash new stock ROM and again see if you're stable. Then try a custom ROM if you're good at that point.

Do I do that in Recovery the same way I would flash a zip? I think the menu option is called 'Select Zip to Flash', or something like that, but I don't think it prevents you from selecting another file type.No, you need to run the RUU.exe to flash it.
I'm an idiot... the exe DOES run on the PC and not the phone. Duh!
The phone is now back to original form. We'll see if she's stable.
Yeah, you're unrooted. I forgot to mention that about the RUU. It's no big deal, you just need to reflash HBOOT, recovery, radios/firmware, and rooted ROM.
https://www.box.com/s/8875f2cdef8376d9faab - SHIP Hboot 1.4 - flash this first via the bootloader.
Then you can get the rest in my root guide: http://androidforums.com/evo-3d-all...ms-kernels-using-fastboot-updated-4-29-a.html
You can even follow that, step for step. Except for step 4, as it's unnecessary as you're already unlocked.