[EVO 4G Q&A, Help & Troubleshooting] RichTheNoun:
Hi folks, long time lurker here. Name is Rich. I have always managed to fix my problems myself with research, patience and good ol' trial-and-error, but now I really do think it's time to call for help. Know that I don't ask for help quickly or without trying a LOT of things myself first! Also, I want to thank all the people that go out of their way to help others- Without you, "Googling" would be so much less valuable.

Ok, so here's my device background:

Evo 4G, HW version 3

Recovery: Amon Ra Style Recovery for Supersonic by drellisdee (Nice. Thanks, dude!)

Rooted with: Unrevoked way back when

MicroSD card: Kingston 16GB class 10, been using it about a year

The situation now:

Power on device -> Screen immediately goes to black background w/ green circle arrows around a green down-pointing arrow above a glowing-screen EVO (The flash update screen). -> stays there forever. Fun, huh?

What I was doing when the problem began:

Flashing the latest radio file (EVO_Radio_2.15.00.08.08_WiMAX_27243_PRI_NV_2.15_003.zip)

Told it to flash this file -> tells me to reboot recovery to flash it -> Rebooted recovery -> I get the screen as described above -> It just sits there eternally.

What may have contributed to the problem:

Just after starting the flash and the the green arrows screen came up, I'm pretty sure I unplugged the USB cable going from it to my PC. I had been transferring files to the SD card previously, I didn't have it plugged in for lack of battery power. Wouldn't have done that normally, it was a "wasn't thinking" moment. :(

Things I have tried, in order (at least, the first few things):

Let it sit there. Initially, I let it sit for something like 20 minutes before I decided it wasn't going to do anything else.

Pulled battery -> replaced battery -> power on -> went right to green arrows screen -> let it sit again, for 30 minutes this time -> start to worry a little.

(repeat last sequence) -> start to worry a little more

Pull battery -> replace -> power on while holding volume down key -> goes right to green arrows -> wait again -> oh crap...

(repeat last sequence) -> Ohhhhhhh crap...

(repeat last sequence) -> (expletives deleted)

Remove MicroSD card -> (repeat, with and without holding down volume key)

Plug into A/C power -> wait until charging light is green -> (repeat above sequence) -> let run overnight -> wake up -> same result -> Oh man I may be screwed

Reformat SD card with PC by way of: Elevated command prompt -> diskpart -> select disk (5) -> clean -> create partition primary -> format fs=fat32 -> exit -> safely remove -> reinstall card -> (repeat sequences) -> same result

Also try above sequence, but without repartitioning/formatting -> same

Place a recovery image in the root of the SD card -> boot -> same

Ok, so here's where I think there is a glimmer of hope:

Hold down the up volume key while holding down the power key -> quick vibrate -> nothing on screen at all -> plug into PC -> device "Qualcomm CDMA Technologies MSM" shows up under "other devices" -> cry a little

So at this point I'm asking for advice on how to proceed- I read about a program called CDMA workshop that might let me get in this way? I've also read that screwing with the wrong settings in there can do things like cause a rift in time and space, so before Skynet starts sending Terminators after me, I'd like a little guidance. Thanks all!

-Rich