[Motorola Droid Bionic] MoodSwinger:
This one is pretty straight forward...Especially if you haven't done much modding to your

phone.

If you're stock or close to, you can probably just move the update to the phone sd and use stock recovery to apply update, and you're good to go. If you are already rooted try the OTA RootKeeper app, hopefully it'll work for you. being that it seems to be hit & miss, i'm guessing it didn't work for people that had issues updating, but will work for those whose update goes smooth.

I on the other hand had already rooted and did the GSM hack on mine so I ran into a few issues that I've others have been having too.

Probably the biggest and most common are "system 7" errors. I've realized you get these when the update checks and finds that ICS files have changed, are frozen, gone, etc. and it's a bit harder to diagnose because it keeps changing depending on what's wrong.

For example it had a code then something else and it referrenced my STK.apk file, then I realized when I did the GSM hack I renamed those to Stk.apk.bak & stk.odex.bak as recommended. So I fixed those & tried update again.

Failed this time at build.prop, yep another GSM mod, but I didn't back-up or save orig settings, so I had to find a bionic ICS build.prop and replace it. found it here (will update with link asap).

Tried again, IIRC, this is the time it worked, but only booted to animation loop. This sucked. Tried to use House of Bionic to fix, couldn't get it to work, but ended finding a fix using recovory "AP Fastboot" had to use pc CMD to reinstall preinstall.img & system.img from the HoB ICS FXZ file.

Look HERE. Thanks to ERIC for this, he gives you everything you need. He's also responsible for dead battery workaround I put below.

When you do this, you can't boot phone back up but you can go into stock recovery & re-apply update from sd on your phone. It wipes everything tho, so if you used OTA RootKeeper, it's gone. But you get phone back.

Bottom line...MAKE BACK-ups or save everything you've changed.

If you've heavily modded things on your phone it might be more worth it (easier) to back up & save what you can as far as apps & personal stuff then redo ICS stock, Maybe root & use OTA RootKeeper here, tho I've heard this doesn't always work either (the OTA part), then apply JB update. then re-install / apply what you were able to save / back-up.

So in hindsight I would guess modding anything within the system is what gives you the "system 7" error, and depending on what you did, or maybe someone you bought the phone from already rooted & modded, it can take you all day to fix / replace those files, just do the reflash of the (2) img files & call it a day. This way you can probably avoid the boot loop issue too.

One other thing about the boot loop one...if you wait & wait & wait like I did it KILLS your battery, and you won't be able to use Fastboot.

IF THIS HAPPENS...find an old phone charger or DC plug, like for your computer, clip off the end and line up the positive & negative connections on the battery then push it into the phone so the wires are touching the phone connections too. Be careful what it's putting out tho, I found I had one that the output was 6 (watts i believe) and 300 mah. It worked the trick just fine. you don't want anything to high as you don't want to burn up any circuits. most USB plug phone chargers go around 5 (watts) I believe. just FYI.

Hope this helps someone.

Cheers.