No Service after CM10 (and back to stock)

Hi All, Yesterday I was trying to have my old backup Rezound into CM10 to replace a broken S3. I followed the thread http://xdaforums.com/showthread.php?t=2113140 to flash my Unlocked and S-On to CM10 but after all the steps (see Q&A How to flash on S-On) everything seemed to be working ok but I have no service at all. Then I decided to move to TACHYON following the details on http://xdaforums.com/showthread.php?t=2431552 but again, no service at all. Today I decided to do a downgrade to Stock via RUU (http://xdaforums.com/showthread.php?t=2509770), I even got S-Off to follow step by step of that thread, however after all the efforts, still no service. The first time I botted after all the steps in that thread, I could see 3G for a few seconds but then everything went off and no service (I see 1 bar in my signal from time to time, but can't even make a call).

Any ideas on how to find out what the issue is and how to solve it? Right now I', S-Off, Re-Locked and with the latest RUU

So here's the new finding: I changed mobile network to just CDMA and now I could get 3G and service (good news), however if I go back to LTE/CDMA I never get to 4G. Still researching

acejavelin said:

What Hboot and radios?

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HBOOT 2.28.0000
Radio 2.23.10.0123r/2.23.10.0124r
OpenDSP (not sure if its needed, but here it is) 14.6.0.7708.00.0507

Thanks,
Rodrigo

acejavelin said:

So stock and no 4G? Bad SIM maybe?

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It is weird, because I got it from Verizon yesterday (my S3 broke so I went to activet this one) and it was working ok until I flashed CM10. I won't bother to go back to verizon cause I'm getting a new phone in the next week or so, however I wish I could have 4G this few days.

REV3NT3CH said:

i know this sounds odd but the rezound acts weird with verzion if the Android OS on stock was not activated with that sim.... are you s-on

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I'm S-Off, I was S-on with CM10 and had to do an S-Off to go back to stock. Not sure if it is possible to go back to S-On? could that fix it?