[8525, TyTN, MDA Vario II, JasJam Software Upgradin] pedro2k:
Possible fix!! If you try this out, please post your outcome!

Just like with everything on these threads, please proceed with caution. This fix worked for me. It may not work for you. Read all the necessary info and understand what you’re about to do.

If you bricked your phone upgrading, this will not work for you.

A little background. I have been for the last three weeks getting the dreaded “no gsm” on my phone. It starts when I lose a signal and the phone tries to reacquire it once I get into a better area. The phone would lock up, leaving me with no choice but to soft reset. But once it boots up, “no gsm” shows up and my device would throw a tantrum and not get back to a stable state until I get home, remove the battery for a while, then reboot. It got progressively worse, to a point where when I’m traveling and I lose the signal, the phone became worthless as I soft reset fifty thousand times trying to get the no gsm error to not show up.

For three weeks, I have experimented with changes to the ipl/spl, different radios, and different roms. Different combinations of these three things, hoping that there was some software conflicts I could find that was frying my radio. I have tried just about every radio and rom combination available. Made some tweaks that worked for awhile but eventually, things would regress back to fubar.

One of the tweaks I did that I thought was a bit interesting was to the “bitpool” found in some of the cooked roms under advance config. When I lowered this value, my phone became more stable. Less drop calls and lock ups in a good signal area. Being that I’ve tried just about all of the combos with all of the other things, I decided to delete the ad2p folder which can be found with a registry editor. I don’t have a stereo Bluetooth headset anyway.

Problem solved! No more nasty “no gsm”. Not in the last four days of use with extensive travel going in and out of a 3g area. I cannot tell you what exactly in that folder is conflicting with or frying the radio. Frankly, I don’t care. More than likely, I will never get a stereo Bluetooth headset anyway. I know from reading the wiki, Bluetooth and wifi are suppose to be independent of the radio stack, but this has resolved my intermittent no gsm problems. To reconstruct what I have done, Here is what you would need to do:

1. If you have advanced config on your device, tweak whatever you would want to tweak, then if you can, delete the icon. You probably don’t need to do this, but I want to sailor proof this solution. :D

1A. Download a registry editor. Read and understand how to use.

http://wiki.xda-developers.com/index.php?pagename=Hermes_Registry

2. Once you have the device booted up, connected to activestink and your registry editor running, go to

HKEY_LOCAL_MACHINE/SOFTWARE/Microsoft/Bluetooth/AD2P

Right click the folder and delete. Wait thirty seconds or so, suspend your device once or twice then close out the program and soft reset or power down. Boot up, go to the registry editor again to check if the deletion of the folder was a success.

3. If you pair up your Bluetooth headset and find that your phone is a bit unresponsive, ie “operation failed” messages, dropping calls, freezing and locking up, run registry editor and go to

HKLM/SOFTWARE/Microsoft/Bluetooth/AudioGateway/Capability

(Default is 37)

Lower the dword value. I have mine set at 20. If you find that the phone is responding well, but the bluetooth audio is subpar, raise the dword. I have seen some recommending this setting to 60. We have different mono Bluetooth headsets, find what’s best for you.

Once again, this worked for me. My radio was still alive as it came on sometimes during the five million times I’ve done a soft reset during my travels. Yours may be a hardware issue. If you currently have no gsm all the time, I suggest to take out the battery, leave it out for twenty four hours or even a week, then fire it back up again. See if that revives your radio. Do not install a new radio until you have tried this and/or have the device at a relatively stable state with the phone showing a signal. If nothing else, you’ve tried and failed, back up everything then do a hard reset. That should bring you back to the proverbial drawing board. FYI, on this phone, I am using a cardo scala S-800.

Why does it happen to only some of us? Possibly, it’s because only some of us lose our carrier signal then pick up a different non provider signal. In my situation, I initially saw the no gsm error when this happened. If you live and travel in good signal areas mainly using your cell provider towers, I doubt if you’ll ever get infected with no gsm.

I cannot think of a situation where this possible fix would irreversibly brick your phone. I haven’t experienced any unwanted effects yet. As far as I knew, the ad2p folder only applied to the settings for the sound quality of the stereo Bluetooth headset. Probably why it took me so long to delete it because it was one of the last things I thought about that could possibly throw off the radio stack. If you can think of one, please post your cautions and advice.

If you try this, post your results. If this is the cause of the current crop of no gsm phones, maybe we can get some of the geniuses on these boards to figure out exactly what is the conflict between the radio and the ad2p folder. Thanks and good luck J