[Mogul, XV6800 ROM Development] onioneater36:
Based on what I learned so far, I will give you the steps below, but first, I highly recommend you read the WIKI at the following 2 links...

SUGGESTED READING

1) http://wiki.xda-developers.com/index.php?pagename=HTC_Titan

2) http://wiki.xda-developers.com/index.php?pagename=TitanRecentHome

STEPS TO UPGRADE

1) Read the 2 WIKI's above

2) Dial ##778 on your phone and hit SEND. This will start a utility called EPST. Write down ALL of the EPST information including all parameters on ALL the VIEW INFO softkey submenus. Later when you need to edit the EPST info, our MSL unlock code is 000000 (six zeros). Make sure after entering the MSL that you hit the OK softkey and NOT the enter key on the keyboard as that does not work (it just beeps at you).

3) Replace the stock bootloader (probably version 1.07 LOCKED if you phone is like mine) with a new UNLOCKED bootloader. I recommend nue2.47-SPL Installation Package found

HERE

(there is a PDF with instructions inside). To find out what bootloader you have, hold down the POWER button and the CAMERA button and hit RESET (while holding the other 2 buttons down. The phone will boot to the "rainbow" screen and show you the SPL version. Just hit reset to reboot the phone.

4) Install a new radio ROM. I recommend version 3.42.50 found

HERE

(this is one of the newest radios and supports the built in GPS).

5) Install a new ROM. I recommend dcd3.2.6 found

HERE

The reason I made the suggestions above are based on everything I read, dcd's ROM is VERY efficient. You will have much more memory left over, the phone will be much faster and more stable, etc. It will be Windows Mobile 6.1 with a working GPS.

Read thru the WIKI's for detailed instructions on how to complete the steps. There will be ways to do this via USB cable or SD card (make sure you use less than a 2GB card). I recommend doing ALL the flashing via the SD card as supposedly that does not effect your A-Key (Authentication Key). Once done, you re-enter all of your EPST data and supposedly you should be up and working.

The only step I feel a little gray on (will make more sense after reading the WIKI's and learning about the work dcd has done) is dcd recommends installing a "carrier cab" when you are done. Since Cellcom is a tier 2 provider, I don't believe there is a "carrier cab" for us, but I believe manually re-entering all the EPST data takes the place of this. If it still won't connect, you can supposedly dial *228 once the phone is working to have the carrier automatically setup your network connection.

Since you are with Cellcom, you are probably located near me geographically. I would be willing to help if you are interested as I obviously want to do this too. I believe you said you have 100 phones? I have 1. Therefore I would love a little more assurance that I am doing everything correctly before I jump into this.

If you are interested in working together, send me a private message and we'll work something out.

Good Luck and please let me know if this works for you (I believe it should).

If you more experienced phone flashers out there see any errors in my post (or want to add assurnace that I understand steps correctly) please feel free to voice an opionion.

P.S. I had this post 99% typed out and acidentally shutdown Firefox! Argh! I typed it again cuz I really want to help you and verify this works with Cellcom before I jump in too.

Also, if you decide to use dcd's ROM and we get this working, I suggest we send him a paypal donation. I will be for sure. From what it sound like, he puts a ton of time into fixing this phone and helping people out.