Database Develop

Siemens SX66 and Country Code Error

This post is intended to save those who are experiencing the country code error on a Siemens SX66 / Cingular Wireless device the 5 hours of headache it took me to figure out how to upgrade to the latest ROM available directly from Siemens (1.33.110).
1.) Download this file.
http://communications.siemens.com/c...1774_rArNrNrNrN_prodId:76051,00.html#Firmware
2.) This in an exe, but DON'T run it immediately. It is an installshield package - open it with Winzip or Winrar and extract it to a folder of your choosing.
3.) In that folder, you will find several nbf files, a few exes, and a file named RUU.conf.
4.) In RUU.conf you will find the following:
[PLATFORM]=667685
[RADIO_TYPE]=1
[SECURITY_FLAG]=1
[DECODER_KEY]=1
[RADIO_FLAG]=1
5.) Add this line:
[CHECKCEID_TYPE]=1
6.) Save the file. Make sure your unit is connected to the USB cradle, is fully charged, and is on. Run BaUpgradeUt.exe out of the folder you're working in. You'll see that on the first run, you don't get the country code error. It will show you the old version you're upgrading away from, and the new version you're upgrading to. Proceed with the upgrade.
7.) You'll see the device go blank as it goes into bootloader mode. A few seconds later, you'll see the country code error. THAT'S OK - DON'T PANIC. Just close the application, and restart BaUpgradeUt.exe again.
8.) You should experience a successful ROM upgrade at this point - you're done. Hard reset the unit per the instructions and you're good to go.
9.) I can be contacted at josh [AT] pinwheeltech [DOT] com.

Lokiwiz.bat problem,plz help!

1. Glance through Faria's original thread on this (he wrote the book!!)
2. Download button's 1.05 ROM
3.. Downgrade your ROM to the Button 1.05. Let it go through the whole setup please...
Note: If your device fails at 98% with a 302 error follow Vippie's advice and try the Xda_MiniS_LaunchROM_v154102 instead.
4. Download lokiwiz - HTC Wizard Unlocker UPDATE Version 0.2b
5. Extract the afore mentioned file to the root of your C drive. Do NOT extract to a folder with spaces...
6. Open Activesync WITH YOUR DEVICE NOT CONNECTED! and delete your partnership.
7. Connect your device and cancel the partnership. (You're a guest )
8. Open ActiveSync, Explore and copy enablerapi.cab from your PC's C:\ (remember that's where you extracted lokiwiz to...) to you device, I don't care where.
9. Pick up your PDA, File Explorer, find the enablerapi.cab and click it.
10. (Back to your PC) ... <Start> <Run> <cmd> <Enter> to give you a most wonderful MS Dos prompt (be afraid, VERY afraid!)
11. In the MS Dos box (mouses not allowed!!!) type "CD\" <enter> (no quotes)
12. Type "lokiwiz.bat" <enter> (Actually, if you have XP, type lok then <tab> it SHOULD complete the filename, YMMV.
13. You will see a screen that has ...
U. Unlock
L. Lock
C. CID Unlock (SuperCID)
Q. Quit
14. Hit the U key on your PC and press <Enter> ... your PDA WILL REBOOT upon completion !!!!!!!
15. Wait for your PDA to reboot, rerun the lokiwiz batch file (if you hit the up arrow key twice on your keyboard it will retype "lokiwiz" then hit the C key on your PC and press <Enter> ... YOUR PDA WILL REBOOT UPON COMPLETION !!!
(if your Pocket PC Phone does NOT reboot each time, you didn't do it right! Stop and make that work, trust me!, then go on)
16. Watch the rebooting of your PDA, if BOTH IPL and SPL are 1.xx then great. Quite probably your IPL will be 1.xx and your SPL will be 2.xx. Rerun the button 1.05 ROM downgrade a second time and it will become 1.x on both IPL and SPL. You don't need to redo the unlocking.
17. My suggestion, take for what it's worth, is to download and install the T-Mobile 2.26 ROM
This will give you a strong 2.26 IPL and SPL to work with.
Now you SHOULD have a IPL and SPL of 2.26 to work with. If not, you screwed up! Don't attempt to install someone's hard work and ***** before you do these steps!
EDIT for Step 17 - Download and install the 3.08 IPL/SPL rather than the 2.26, your choice! (I suggest doing the T-Mobile 2.26 first but that's me
Click to expand...
Click to collapse
i've done thru step 13 and when i run .bat i have this :
Unlocking mobile... DO NOT DISCONNECT UNTIL THE PHONE REBOOTS!
CopyTFFSToFile(0x0, 0x10000, lock_backup.bin)
_
Click to expand...
Click to collapse
and it doesn't do anything more!!
what i may have do wrong?

how many time it's supposed to be?
other info :
-when i plug my pda i have a msg like "backup your parameters" and it doesn't disapear but activesync is green and i can see my phone on my pc!
-i can't get WST to work, whatever the button i click the tool bug and crash
please help me!
thank you in advance

wolf69 said:
how many time it's supposed to be?
other info :
-when i plug my pda i have a msg like "backup your parameters" and it doesn't disapear but activesync is green and i can see my phone on my pc!
-i can't get WST to work, whatever the button i click the tool bug and crash
please help me!
thank you in advance
Click to expand...
Click to collapse
if you have followed the procedure correct than there's no way that you shud stuck at step 13 as you say.you are supposed to complete the procedure only once and it takes only a couple of minutes to finish.
error: stuck up at...
Unlocking mobile... DO NOT DISCONNECT UNTIL THE PHONE REBOOTS!
CopyTFFSToFile(0x0, 0x10000, lock_backup.bin)
the only catch in it as where guys usually go wrong is placing of EnablRapi.cab file in the phone,check if you have done this step correctly,secondly where did you execute the Lokiwiz.bat file ?

i've found my problem sygate don't let the .bat access to my pda!
so i've upgrade my pda with NBT (i think its the name...)
but i can't syncmy pda with my computer it says me that i need activesync4.5 but when i install it i have an error that says me that the programe can't install cause of a dll (without name it!)

wolf69 said:
i've found my problem sygate don't let the .bat access to my pda!
so i've upgrade my pda with NBT (i think its the name...)
but i can't syncmy pda with my computer it says me that i need activesync4.5 but when i install it i have an error that says me that the programe can't install cause of a dll (without name it!)
Click to expand...
Click to collapse
lol !
glade you found what was not letting it complete.But, my dear,its been stressed upon in many threads and alot of times to disable or close if any anti virus and also temporary disable or close any Firewall,even Windows own Firewall.
You mean WM6 Rom NBD 9.2 ? if yes, CONGRATS!!!
NBD Rom has nothing to do with not letting it sync,it just that Active sync downloaded file might be corrupt,download again and install,i'm sure it'll be alright

Help with wm5 to wm6 upgrade!

I'm dizzy reading all the threads, information overload, so thought I'd just post the question! This is all a bit scary and I'm a complete newbie so take it easy on me... and feel free to dumb everything down as if I were a child.
I live in Australia and have a Treo 750 with Software Version TREO750-1.15-ROW. It seems to be unlocked but still has the Telstra splash screen, although I use it with Vodafone. I want to upgrade to WM6, and from what I can tell I should upgrade using Treo750_2_27_ROW_EN_DesktopUpdater.zip (which I now have). Is this right? Should I skip straight to the WM6.1 upgrade? Are these official/safe?
I am running 32-bit Vista with SP1 on my laptop.
I found instructions on Palm's site here:
http://www.palm.com/au/support/treo750/downloads/wm6update.html
Are those the instructions I should follow? Is that all I need to do? I keep seeing references to the "Bootloader Method" or the "SD Card Method" or the "Cheetah Method". What are all these alternative methods? Which are the advantages of each? I've seen various different instructions, some involving renaming some .nbh file, etc. What is the definitive method?
I saw the sticky thread for the "Cheetah Hard-SPL and SIM Unlocker"... what is that utility for? Are the instructions for it in the download itself? (I didn't see it in the thread) What are "cooked" ROMs and why should I be interested? Where can I find them?
Sorry for the newbieness... thanks so much to all who respond!

upgrade to WM6
If you want to upgrade to the official palm WM6 rom - then you use Treo750_2_27_ROW_EN_DesktopUpdater.zip and it is very simple - just connect the PPC to your computer . (as I know better to do it with a computer with WINXP and Activesync) , then run the program in the file Treo750_2_27_ROW_EN_DesktopUpdater.zip, and that's it.
If you want to upgrade to other roms like 6.1 normal or lite that you can find in this forum - then you need the other methods (there are two as I know - bootloader method or Kaizer..somthing method). Well, I wrote a guide how to upgrade to WM 6.1 lite using the bootloader method , I just sum up from this forum :
1. Download the rom file and the radio file:
Rom file from here : http://rapidshare.com/files/89355384/Treo750_WM6.1_WWE_Lite.rar
The radio file from here :
http://rapidshare.com/files/89336971/Treo750Radio1.54.07.00.rar
2. Download the Hard-SPL from here :
ftp://xda:[email protected]/Cheetah/Unlocker/CheetahUnlocker.rar
3. Format mini SD card 32 FAT , using a card reader or other way.
4. Do a HARD-SPL with the CheetahUnlocker file ( step 2) . Connect the Treo with your computer using Active sync(for WINXP) and run the file. Use those steps:
- Click the Step 1.... wait the progress bar reach 100%
- Now watch the Screen on your PDA it will launch 2 times verification...
- just click YES ...wait.. and YES again.
- after finisih... wait until the activesync go green again.....
- Now click the Step 2... wait the progress bar reach 100%
- Watch the screen again... same thing.. it will launch 2 times verification.
- click YES ...wait.. and YES again.
- After finish it your PC screen will shows some popup. ignore the reading bla bla bla... about ask u to click ok.
- Just wait untill your activesync go green again.
- Now click that bloody Popup OK button.
- The unlocker app will shows up again..
- Then you will see errors saying.. continue, cancel...etc... bla bla... just click continue.. error message.. iqnore it and then just finish it.
- Now your Cheetah should be on HARD SPL mode.
5. Install the ROM :
a. Using Winrar get the file from step 1. It's name should be : CHEEIMG.nbh
b. Copy the file to the root of the mini SD .
c. Do BOOTLOADER:
1. turn phone on
2. press the MEDIA button AND at the same time with the stylus the RESET PIN
the MEDIA button is the 3rd button on the left side of the phone, under the volume button
the RESET PIN is under the MINI SD card cover
3. keep holding the MEDIA button (left side of phone) until you get the 3 color screen
Wait until it finishes. Then Hard reset the device when prompted. To hard-reset, hold the End key while pressing the pin reset button. Answer “yes” to “Erase all data” prompt.
6. Flash the radio at the same way – just copy the radio file to the mini Sd – it should be the same name. (CHEEIMG.nbh ) .
7. Download the Palm SMS file from hereYou need it only for the lite version)
http://rapidshare.com/files/99335294/threadedsms.rar
or
http://www.megaupload.com/?d=H63TXUP4
And install it as regular software (Copy to the mini SD and run it from the Treo.)
And that it all !!
Do not restore from your backup (You can restore only your data files).
Good luck !!

Update Successful
Thanks mate, I'm not brave enough to try the wm6.1 upgrade yet, but I did manage to upgrade to wm6 with the Updater, even though my device was "not supported". I ended up using the method where you edit the payloads.xml file before clicking 'start' so that it accepts your current device version, etc. I'm all good now.

libal said:
If you want to upgrade to the official palm WM6 rom - then you use Treo750_2_27_ROW_EN_DesktopUpdater.zip and it is very simple - just connect the PPC to your computer . (as I know better to do it with a computer with WINXP and Activesync) , then run the program in the file Treo750_2_27_ROW_EN_DesktopUpdater.zip, and that's it.
If you want to upgrade to other roms like 6.1 normal or lite that you can find in this forum - then you need the other methods (there are two as I know - bootloader method or Kaizer..somthing method). Well, I wrote a guide how to upgrade to WM 6.1 lite using the bootloader method , I just sum up from this forum :
1. Download the rom file and the radio file:
Rom file from here : http://rapidshare.com/files/89355384/Treo750_WM6.1_WWE_Lite.rar
The radio file from here :
http://rapidshare.com/files/89336971/Treo750Radio1.54.07.00.rar
2. Download the Hard-SPL from here :
ftp://xda:[email protected]/Cheetah/Unlocker/CheetahUnlocker.rar
3. Format mini SD card 32 FAT , using a card reader or other way.
4. Do a HARD-SPL with the CheetahUnlocker file ( step 2) . Connect the Treo with your computer using Active sync(for WINXP) and run the file. Use those steps:
- Click the Step 1.... wait the progress bar reach 100%
- Now watch the Screen on your PDA it will launch 2 times verification...
- just click YES ...wait.. and YES again.
- after finisih... wait until the activesync go green again.....
- Now click the Step 2... wait the progress bar reach 100%
- Watch the screen again... same thing.. it will launch 2 times verification.
- click YES ...wait.. and YES again.
- After finish it your PC screen will shows some popup. ignore the reading bla bla bla... about ask u to click ok.
- Just wait untill your activesync go green again.
- Now click that bloody Popup OK button.
- The unlocker app will shows up again..
- Then you will see errors saying.. continue, cancel...etc... bla bla... just click continue.. error message.. iqnore it and then just finish it.
- Now your Cheetah should be on HARD SPL mode.
5. Install the ROM :
a. Using Winrar get the file from step 1. It's name should be : CHEEIMG.nbh
b. Copy the file to the root of the mini SD .
c. Do BOOTLOADER:
1. turn phone on
2. press the MEDIA button AND at the same time with the stylus the RESET PIN
the MEDIA button is the 3rd button on the left side of the phone, under the volume button
the RESET PIN is under the MINI SD card cover
3. keep holding the MEDIA button (left side of phone) until you get the 3 color screen
Wait until it finishes. Then Hard reset the device when prompted. To hard-reset, hold the End key while pressing the pin reset button. Answer “yes” to “Erase all data” prompt.
6. Flash the radio at the same way – just copy the radio file to the mini Sd – it should be the same name. (CHEEIMG.nbh ) .
7. Download the Palm SMS file from hereYou need it only for the lite version)
http://rapidshare.com/files/99335294/threadedsms.rar
or
http://www.megaupload.com/?d=H63TXUP4
And install it as regular software (Copy to the mini SD and run it from the Treo.)
And that it all !!
Do not restore from your backup (You can restore only your data files).
Good luck !!
Click to expand...
Click to collapse
Did everything - step by step but nothing!
still the color screen with the word serial in the bottom!
What is wrong ???
Thanks in advance,
Nir

Got it!!
Turned out vista is displaying fat32 file system no matter what the file system is...
Nir

WM 6.1 Upgrade
Can anyone tell me where the AT&T Upgrade for the Treo 750 is to version 6.1. I have seen many different posts here that show many different links and different downloads with different loading instructions. Is there anything out there that is clear? I am willing to give it a try, but I am not exactly sure of which download to try. Thanks for your help.

Noobs Definite Guide to Himalaya Updating [XP/VISTA]

Hello All, many of you just keep asking how to do that and this, you do not use search, so im making this Guide which will help you
Things You Should Know:
Things Which Will not work after Upgrading to WM5, WM 6 or WM 6.1 :
Htc Himalaya Backpack (read below)
STK will Not function
There is no SDHC Drivers for any Version of ROMS for HTC Himalaya Yet
To Have 30.53 MB of storage Go here
Upgrading:
Windows XP :
Requirements :
Windows XP
Microsoft ActiveSync 4.5
Minimum of 256 MB of RAM
and some patience
Start your device in bootloader mode by pressing and holding down:
DPad + PowerButton + ResetButton
After a second release Reset Button, then release the rest of them.
Your screen will show word "Serial" at the top.
You are in bootloader mode now.
Place your device in the cradle/USB Cable, ensuring that the cradle/USB
is plugged directly into a USB port on your PC and not to a hub
and that the power supply is connected to the cradle/USB.
It is also a good idea to disable any screensavers on your desktop PC.
Once your device is cradled, the text on the screen will change to "USB".
Run HimaUpgradeUt_noID.exe and follow the instructions
Sit back and wait for the Congratulations screen to be displayed
on your PC.
Your device will still be displaying 'Upgrading radio stack, please wait' but as long as the PC says it is done, then its all OK.
Detach your device from the cradle/USB.
Now you have to hardreset your device :
Press Reset Button and hold down Camera Button + Record Button.
Hold them pressed until the "Boot Options" menu appears on the screen.
Select the options as follows:
(for selecting use Record Button, change values with Camera Button)
Enable KITL -> NO
Clean Registry Hive -> YES
Format Storage -> YES
When done, press DPad/Action Button and wait until OS starts.
Click to expand...
Click to collapse
Windows Vista 32-Bit :
Requirements :
Any Version of Windows Vista 32-Bit
Windows Mobile Device Center (Latest Version)
and a little computer knowledge
Before starting: Your device needs to be connected to the PC, and in BOOTLOADER mode.
Step 1 of 16: Extract the attached zip file to a memorable location on your machine (e.g. the desktop). This is the Activesync 4.5 RTM USB driver.
Step 2 of 16: Run 'Windows Mobile Device Center', and click 'Connection Settings'.
Step 3 of 16: Uncheck the 'Allow USB Connections' box, and select 'OK'.
Step 4 of 16: Run 'Services' by clicking the Start Orb and typing 'Services', and ensure the 'Windows Mobile-based connectivity' and Windows Mobile 2003-based connectivity' services are started. If they are not, click the service name and press the 'play' button on the top bar.
Step 5 of 16: Load 'Device Manager' by clicking the Start Orb and typing 'Device Manager'. Expand the 'Mobile devices' section and click the 'HTC USB Sync' (or similarly named) item.
Step 6 of 16: Click the 'Action' menu and select 'Update Driver Software'.
Step 7 of 16: Click 'Browse my computer for driver software'.
Step 8 of 16: Click 'Let me pick from a list of device drivers on my computer'.
Step 9 of 16: Click 'Have Disk'.
Step 10 of 16: Click 'Browse', and browse to the location where you extracted the ZIP file in Step 1.
Step 11 of 16: Double click 'wceusbsh.inf'.
Step 12 of 16: Select 'HTC USB Sync' from the list, and click 'Next'.
Step 13 of 16: Wait while your driver is installed.
Step 14 of 16: Run 'Task Manager' by clicking the Start Orb and typing 'taskmgr'. Then find the 'WMDC.EXE' item, and click 'End Process'
Step 15 of 16: Install your update! Everything should now run fine! You just need to bear in mind the final step when you want to start syncing normally again...
Step 16 of 16: In 'Windows Mobile Device Center', re-enable the 'allow USB connections' checkbox you disabled in Step 2.
Click to expand...
Click to collapse
If MODS find this Helpful, Please Sticky This
muckelmaus Wrote :
As I tested some ROMs with my himas. Only the CF-slot will not work, 'till someone will write a working driver for it.
There are no probs to use the backpack battery and the vga-video funktion, so far. Two out of three, thats not bad, I think.
Click to expand...
Click to collapse

Backpack problem
Things Which Will not work after Upgrading to WM5, WM 6 or WM 6.1 :
* Htc Himalaya Backpack
As I tested some ROMs with my himas. Only the CF-slot will not work, 'till someone will write a working driver for it.
There are no probs to use the backpack battery and the vga-video funktion, so far. Two out of three, thats not bad, I think.

thanks for the info, i havent tested it my self thats why i didnt knew, edited the First post with this info

Im a noob
Hi I am a noob and followed this guide but it did nothing...
Basically I have a 02 XDA II - it is locked and I want to upgrade it to windows 6/6.1 - I have been reading through the forum for a couple of hours now covering the wiki for himalays and other things.
I followed the steps on this - but nothing has been upgraded. So I guess this isn't how to upgrade to wm6?
So frustrating cos I can't seem to find the instructions on how to do it.
I believe its a rom i need right?> how do i put it on?
Should I unlock the xda first? (havent worked that out yet) or upgrade to wm6 and then it will be unlocked anyway?
Please please help I have been reading loads and trying to not ask obvious thigns.

i donot know if its SIM locked or not...try givinf xda2unlock a try
second, to upgrade you need a ROM, there are MANY roms in this Himalaya WM6 Forum...many of them have detailed instructions
it wont be any harm if you upgrade first...try giving it a shot and tell me
Ather

I have also performed 'Unlock Wiz/Himalaya' but all I get is 'The phone seems unlocked already' - but it is not unlocked - any advice with this also?

try to upgrade the rom simply, if u get stuck, we all are here

I am struggling through trying to work out how to unlock my sim and then flash WM6 onto my 02 XDA ii which therefore is a himalya - says PH10b in model no.
Anyway Im following one of the guides (http://wiki.xda-developers.com/index...0for newbies) and it says I have to establish whether it is a G3 or G4 or else Ill brick it and probably throw myself out of my window.
So I performed a soft reset and got the following information in red letters when I do it.
R 1.10.00
G 1337. 18
1.60.00WWE
I just don't know if it is a G3 or G4 and can't afford to brick this phone - so please could someone help me so I know which intructions to follow?
I will send best reply a stick of rock from Blackpool (famous for rock - its like sugary concerete).

Sorry to be unclear - it is sim locked - it has horrible 02 logos all over it.
Bastards.
Anyway it is sim locked and wm 2003 i think.
Im not clear about how to install a rom - i did update the drivers putting it in boot and then updating driver from what i downloaded - which I think was to resolve and issue with vista/xp as i am using vista.
Right now im trying to work out G3/G4 because i found what seemed to be a good instrucitonal post

lol, the xda2 doesent has g3 or G4 ... so flash away

So how do i unlock it and then install WM6?
Is there a step by step guide?

It is sim locked and i want to unlock it and install wm6

the Branding has nothing to do with the Simlock, my Himalaya is from O2 too, and all it had was Branding, no simlock.
I'm currently using E-Plus as my Provider, and i did not have to circumvent any simlock before flashing WM6.1 onto the Device.
Also, if it DID have a Simlock, it has probably worn off by now, since the Device is already older than 2 years...

I have managed to unlock the sim now thanks to the wonderful people here but still have no clue how to install wm6?

congrats , just download any ROM and enjoy flashing it

do i just download a wm6 file and put it onto my pda and then execute it? double click it? is it that simple?

Can u spefically tell me how to implement a rom?
i assume i download it but then what?
I am thinking I'll just brick it - then spend months on here asking for help... Id rather just ask beforehand and find out how to do it.

it's exactly like ather said, you downloaded the ROM, now you can flash it to your XDA.
Just do it like it says in the Readme and you should have no Problems whatsoever

Strange
I had an old Qtek 2020 and flashed it successfully to WM6.1 No problems exept...... the phne does not conect to the correct provider. The SIM is for the Belgian BASE provider whereas it connects always to ORANGE. When I put the SIM in my new Diamond or in my very old Nokia phne it connects to BASE as intended. I reflashed to the original Qtek WM 2003 SE and same thing. Reflashed again to WM6.1 ans still it only wants to connect to ORANGE ??? What am I overlooking?
BTW if I donload the list of providers there isno BASE provider. If I download the list on my Diamond it appears whithout any problem.

it could be because of the Network Manager has old settings, try setting it up manually

Upgrading Treo 750 to WM 6.1

I am having problems upgrading my Treo 750 from Windows Mobile 6.0 to 6.1 standard. I have run the Cheetah unlocker program. I formatted the card and put the radio program on it. Inserted and ran bootloader mode. The screen turns red, green, white and stays that way permanently. I eventually have to pull the card and reset the device. It comes up and works as usual with wm 6.0.
Is my phone not unlocked?
Is the radio program no good?
Any ideas?

Hard to say, but I suspect you either haven't successfully run the unlocker program, or have not formatted the SD card correctly.
BTW - Upgrading a radio would not get you from 6.0 to 6.1 it would only upgrade the radio, so make sure you have downloaded the proper file.

Understood. I have tried both the radio and the cheeimg.nbh file. Both have the same problem. How long should the upgrade take once the bootloader reads the card (so I know how long to wait until I try something else)?

I figured it out....here is the answer from this website. Thanks
originally Posted by dubLeE
With this method I have successfully unbranded, unlocked, and updated 2 Treo 750s that were originally AT&T/Cingular branded.
I spent hours running through multiple threads reading and searching to finally find a solution that worked flawlessly. These steps have been compiled from multiple threads:
http://forum.xda-developers.com/showthread.php?t=428048
http://forum.xda-developers.com/showthread.php?t=412999
http://forum.xda-developers.com/showthread.php?t=334100
Big thanks to Olipro, konker, and jcrompton!!!
Download the following:
Magic Unlocker from http://forum.xda-developers.com/show...21&postcount=2
CheetahUnlocker from http://forum.xda-developers.com/show...68&postcount=1
1_CHEE_MountExtROM.cab and 2_Chee_Extrom_rename.cab from http://forum.xda-developers.com/show...&postcount=374
Treo750_OS5_2_19199WWE_STD.rar from http://omnifusionhosting.net/treo750/
(I couldn't find the original posts for Treo750_OS5_2_19199WWE_STD.rar so I uploaded to my own site for now)
1. Download, extract, and run MAGIC_UNLOCKER on your phone.
2. Select both options in MAGIC_UNLOCKER and click unlock. This will unlock your phone.
3. Format your SD card to FAT32.
4. Extract Treo750_OS5_2_19199WWE_STD.rar and copy/paste CHEEIMG.nbh to the formatted SD card.
5. Transfer 1_CHEE_MountExtROM.cab and 2_Chee_Extrom_rename.cab to your Treo 750.
5. Run/Install 1_CHEE_MountExtROM.cab and then soft reset the phone.
7. Run/Install 2_Chee_Extrom_rename.cab and then soft reset the phone.
8. Click and run Start>Programs>Chee_Extrom_Unlocker. Run it about 3 or 4 time and you should some type of error messages. Just OK or X them and soft reset the phone again.
9. Open File Explorer and click the drop down arrow, in which you will now see ExtendROM. Open it and delete the 2 files in the partition folder.
10. Download, extract, and run CheetahUnlocker on your computer. For this part make sure you have an ActiveSync (XP) or WMDC (Vista) connection to your phone. Click Flash SPL and go through the steps for CheetahUnlocker to Flash SPL. Don't worry about any of the other items in the menu.
11. After going through the steps in CheetahUnlocker and the phone, the phone will enter into tri-color bootloader screen momentarily followed by Loading screen...
12. Next, you'll see a light blue screen with the heading CHEEIMG.nhb followed by a few other entries below it. At this point, it will tell you press the power button. Go ahead and press the End Call/Power button. This will begin the ROM flashing. The ROM flashing takes about 5 to 15 minutes.
13. When the flashing is completed, the bottom of the screen will say Update successful and the entries above with the OK seen at the end. Now reset the Treo 750 with the stylus and immediately (during the Palm Logo) perform a Hard Reset. This is accomplished by pressing and holding the End Call/Power button and simultaneously resetting the Treo 750.
14. You will now be prompted to Erase All Data. Press the Up key of the D-Pad to continue and erase the data. This will format the phone.
11. Upon completion, the Treo 750 will continue to boot-up and go through the initial start-up steps and wizard. Once completed, your phone will now be unlocked, unbranded, and updated to Windows Mobile 6.1.
I made this thread to help people unbrand, unlock, and update their Treo 750s without having to waste hours looking for solutions and how-to something. Basically, made it easier for the noobies and everyone else to find everything in one thread.

Mine goes to a gray screen immediately with an 'update in progress' bar ... takes about 2 minutes to flash the new ROM.

There doesn't appear to be a forum for the 700W/X. Where do I get information on these earlier Treos?

all ur links are not working please check again