Help! My Stellar is stuck at boot after loading stock ROM

Having some issues with my Samsun Stellar... I couldn't load the 4.1.2 JB Update from Verizon on my rooted Stellar... So I tried to first 1) un-root then 2) flash back to the stock ROM then update. Option 1 didn't work, but Option 2 did.... Odin to stock rom, 1 small OTA update, then the JB OTA... worked like a charm. But once I got to JB, I couldn't re-root my phone. I figured that was because the method I used to root (RootDebugFS) didn't work in JB so I went to re-flash back to stock... figure I'll go back to stock, root it there, then try to update. (I figured the orig JB update failed due to all the mucking I did)

But when I re-flashed (Odin 3.0.7), phone started up, I heard the two Verizon jingles, but the screen was dark (on, but dark) and it never finished booting. I tried to do the stock ROM and the stock recovery (with a reset)... still stuck.

Now, I noticed back when I first got to JB that the splash screen with the jingle (4G LTE) was different between 4.0 and 4.1, but I hope that this didn't have anything to do with it.

er... what's my prognosis and treatment? How SOL am I?

After fiddling with it, turns out all I needed to do was reload the stock boot image. Back in business!

bumping this to amend things. loading the stock boot image only allowed me to boot the bone stock ICS image. When I tried to load the LG4 to LH2 update (which is required before I could load the jelly bean update), it failed. I am pretty sure now that it was a problem with the modem image not being 'stock'. I tracked down a rom that had all the images at the final ICS release for the phone, and loaded those up. Updated to JB without error.