[Galaxy Tab General] rotohammer:
What I'm running:

Tmobile Tab with Euro firmware and Simple Mobile SIM (Uses Tmobile's infrastructure)

AT&T Tab with Euro firmware and an AT&T SIM from my Nexus One

This what I know:

The Euro radio.bin allows voice calls but not 3G internet, just EDGE

The Tmo US radio.bin allows 3G internet but no voice calls

The Bell Canada radio.bin allows only 2G, no 3G and no voice calls

The Vibrant T959UVJK2 radio allows voice and 2G internet but: when going through the service menu it allows selecting 1700/2100 WCDMA.

Edit:

1700 is the correct choice for AWS 1700/2100 FDD IV band.

2100 is for Europe FDD I band only.

It looks as if its trying to use UMTS instead of AWS in that state, so it never gets a 3G lock. Its close though.

Edit: AWS is UMTS-FDD Band IV, so the reference to UMTS is valid.

We need more AWS based radio.bin files! The Vibrant is AWS, so whats making it not use UTMS? Perhaps the country code. Originally mine was KOR, now I'm hacked to XEU, perhaps we need to be TMB? Whats the code on a Tmobile Vibrant?

Edit: Naa, its just the radio, the AT&T success pretty much proves it.

Conclusion:

We need a capable radio.bin. Would someone from Samsung please leak one to me :)

AFAICT, only the original US radio.bin is capable of activating the hardware for the 3G circuitry on a Tmobile Tab.

The AT&T Tab gets 3G by using the radio from an i9000, which hasn't been distributed in an AWS band version.

Everyone: Keep your eye out for new Samsung AWS compatible phones and firmware.

Notes:

I have flashed many Vibrant and Captivate radio.bin files, all work as well as the European ones.

I can flash new radio.bin files right from my Tab over adb using redbend_ua so goodbye to Odin and Windows, whoo!

Don't drink and flash! I spent 4 hours unbricking my Tab because I got cocky with redbend_ua. So don't try flashing the factoryfs.rfs while you're still running your Tab from the factoryfs.rfs :)

How I use it (properly):

#copy redbend_ua to /sdcard, install redbend from adb shell
mount -o rw,remount /dev/block/stl9 /system
cp /sdcard/redbend_ua /system/xbin/
redbend_ua restore /sdcard/modem.bin /dev/block/bml12

The redbend_ua flash memory writer app:

View attachment 445378

The most useful radio.bin files:

View attachment 445366

View attachment 445367

View attachment 445951

WARNING! If you make a typo and flash the wrong area of block memory, like say bml1, don't cry to me if your device is trashed!

I would like to get various Vibrant radio dumps if someone would be so kind to do so. The command from adb shell is:

dd if=/dev/block/bml12 of=/sdcard/bml12.dump bs=4096

Lets discuss what we've tried in this thread.

Misc notes:

I screwed up my Tab flashing a rebuilt firmware based off the US dumps. I screwed up the Tab, no boot. I re-flashed JK5, no luck, it just hung/vibrated at the Samsung logo. I went into recovery, and saw an error about the dbdata partition, so I grabbed JJ4, found dbdata.rfs in one of the tar.md5 files, pulled it out, tarred it, then flashed it alone in Odin. Bam! It booted back up!

View attachment 445398

Chat:

I'm going to hang out on #galaxytab since its quiet there. If you just need clarification on something, ask me there. I know everyone is getting confused with all the SIM/Band/US/Euro/ROM combinations. That will hopefully end soon.