motorola droid XT907 on Straight Talk network

[Blufx]

Hello, first post here.
A friend gave me a Verizon Motorola Droid Razr M model XT907. I'm on the Straight Talk network and they started a bring your own phone. After a little research I found this phone could be used if the GSM block was lifted. I successfully did this using the instructions found HERE. It worked perfectly until two days ago. I clicked on update system, when it finished, I lost connection. It had installed Jellybean v4.1.2. I tried using the RadioComm program to unlock the GSM again, but it doesn't work now. I need to go back to ICS at any cost. I'm without a phone now.
EDIT: this phone is not rooted
Any help will be greatly appreciated,

Blufx

 

[Scimino]

If I were you I would first unlock the boot loader. U can find the program under the RAZR m section of this forum. I believe it is under a sticky tab. Sorry I can't post links for some reason. Then I would find a fxz file for ICS. I don't see why it wouldn't work. U just need a unlocked bootloader to go back to ICS. Then repeat the process you did before. Good luck I hope u figure it out.
You might need to use a ICS ROM if u can't use rsdlite to fxz back to ICS.
Edit* yeah u need to change the firmware back to ICS. Which definatly requires a unlocked bootloader

 

[Blufx]

Then I would find a fxz file for ICS.

Thanks for that info. I work on computers a lot, but this stuff in new to me. Where would I find the fxz file for ICS?

 

[Scimino]

I could be a lot more helpful if I could post links.... I googled "RAZR m ICS sbf" and it gave me a link to droidrazr.com where I found 4.0.4 files. 4.0.4 is ics. You will need to make a account before you can download. Did you find the boot loader unlock tool?

 

[Scimino]

Also I am trying to figure out if you should use rsd lite or just a custom recovery to flash ICS. I'm leaning more toward a custom recovery. To install a custom recovery is simple and I think the instructions are in the same sticky that has the boot loader unlock guide.
Just make sure you unlock the bootloader or you WILL turn your phone into a paper weight.

 

[Blufx]

Scimino,
I think I found the tool under razr hacks. Motochopper exploit. If I'm reading this right, I have to be rooted to finish. Looks like I'm in for a learning curve. I'll look up droidrazr.com and check that. Right now I'm getting the Motochopper.

 

[Scimino]

OK good deal. Send me a pm if u get stuck.

 

[Blufx]

Well, now I'm worrying. Just looked at the possible consequences of unlocking the boot loader on droidrazr.com. Are these issues not common or what?:
Applications may not work anymore.
You may lose encryption support.
You may lose some key functions like telephone, radio, and audio playback.
You could cause permanent/physical damage to your device.

 

[Blufx]

Do you recommend me using the droidrazr.com online boot loader unlocker, or the motochopper?

 

[Scimino]

I would use the unlock tool thats in KaChow's guide here on droidforums. Just goto forums, select RAZR, RAZR m, then RAZR m development. You can't miss it. When u get past unlocking the boot loader I wouldn't use safe strap for custom recovery. Use CWM or TWRP Motochopper only roots the phone.