Extreme N00b here - How do I install 6.1 on my US Treo 750?

[michaelalanjones]

I am not the type of person that does hacks or uses cooked ROMs, but since I have been told that Win 6.1 is not forthcoming for my Treo 750, can someone please tell me in simple terms how to install it? I am in the US, have AT&T for my provider, and have a Treo 750.

Here is what I have tried:
I already have the 60+ MB cheeimg.nbh file sitting on the root folder of my 2GB Storage Card. I tried many times - hold down the push-to-talk button and then push the reset button. Nothing happens, except for three bright colored bars. Or am I not waiting long enough? I dunno.

I read that the Storage Card is supposed to be reformatted to 32-bit (or something like that) - I don't have a tool for this, and all my apps are installed there. I don't want to lose everything. Or will I anyway? Is there some sort of SD card reformatter?

I have downloaded things like the CheetahUnlocker.exe, the RUUWrapper.exe, the Treo750Radio1[1].54.07.00.rar file, and the Treo750_OS5_2_19199WWE_STD.rar file. I don't know what to do with them.

I don't want to unlock this phone; I am still going to run it on AT&T, I just want the 6.1 OS, that's all. It is getting silly. I was going to just buy another phone, but really, the 750 is fine - it runs great. I just want to try the 6.1 OS. If it is even better than 6.0, then great.

My wife wants me to just junk it and get an iPhone, like she has. I don't want to do that, the 750 is great for me.

[michaelalanjones]

Just so you know, I am not trying to trick anybody, and get them in trouble, or anything. Surely, someone has been able to get WinMo 6.1 installed on their AT&T-branded Treo 750.

[sharpmat007]

You just need to search a little harder, but the wiki is where you should start.

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

[michaelalanjones]

I copied every single file on my Storage Card to my PC, as a backup, just in case I needed anything. I downloaded the 6.1 cheetah file mentioned here.

I didn't know how to format my Storage Card to Fat32, so I googled 'format storage card windows mobile' and found a program called Flash Format, on CNETX. It has a trial version. I installed it to my device (not the Storage Card, obviously), and it formatted the Storage Card drive to FAT32 in a few seconds. Then I followed the steps shown here.

I rebooted, and guess what happened? It set my OS to Australia's at WM6.0, not 6.1.

!@$%@#$%!!!!

So I started up the old 6.0 updater that I got from Palm, and it said nope, you already have a newer version.

%&*%&*&^!!!

So, I started it back up, and stopped at the first screen. Then I searched my PC for the payloads.xml file, and found it, and the 6.0 CHEEIMG_FW.nbh file, renamed it to CHEEIMG.nbh, stuck it into my Storage Card folder, and started the bootloader.

I rebooted, and guess what happened? I am still at the Australian version.

*#%^&%&!!!

[michaelalanjones]

Look, if this happens to you, do this:

1. Launch the Official Palm updater (Treo750_2_25_ATT_EN_DesktopUpdater.exe).
2. When the window pops up, do not click Start. Instead, do a search on your PC for a "payloads.xml" file.
3. Edit that file; change the high version to 2.3
4. Now, click the start button on the updater.

I kinda liked the Australian version, because it had MSN Messenger and some other things that AT&T USA did not have. But it also was missing the AT&T Proxy app. And it seemed to run slower?, I dunno, although it did work fine for me.

[michaelalanjones]

I was scared there for a while - this is silly. Other people have WinMo 6.1, but I will never have it for my Treo 750? I guess they are not in the business of supporting old phones, just selling new phones.

I guess I will just stay with the old WinMo 6.0 until this phone eats it. Then I will buy a new phone.

[startngate]

Why are you being so dramatic? Of course you can have 6.1 on your phone ... it's really not all that difficult.

First, you have to run Hard SPL. Instructions and the download are a 'sticky' on the top of this forum. You must do this step. If you don't the OS upgrade won't work.

Then use the SD card method to upgrade your OS to 6.1. Forget editing payload files and the like. It's simple and works.

I know you said you don't want to unlock your phone, but honestly, it makes no difference to your ability to use the Treo on the AT&T network by doing so. In fact, you won't even know your phone is unlocked.

[michaelalanjones]

Okay, I didn't know that I needed to unlock the phone (and that unlocking would not affect my AT&T service). Thanks. I thought people only unlocked phones when they were going to sell them for use with another carrier. This is my first unlock.

Steps included:
1. Connect the Treo 750 via ActiveSync to your PC.
2. Run the CheetahUnlocker.exe program.
3. Ignore the stuff that says Hermes, and just click the buttons.
4. (If you didn't do this already), get FlashFormat from CNETX, and install it on your Treo 750, then run it to format your Storage Card to FAT32.
5. Copy the WinMo 6.1 cheeimg.nbh file to your Treo's Storage Card, in the root folder.
6. Hold down the PTT button and then click the reset buton under the Storage Card door.
7. You now have Win Mobile 6.1. Whoo hoo.

[michaelalanjones]

That is wierd. I had Voice Command before, (on my Treo 750) and now it is gone. Anybody ever have this happen?

[startngate]

Voice Command and Remote Desktop were not part of the WM6.1 build as far as I can tell. At least not on the one I'm using (Full version, not Lite).

You can get the CAB files for each of those and install them separately. I did install the Remote Desktop, but don't use VC, so never bothered. I did see that some people were saying that older versions of VC 1.6 were having issues, but it seemed to be hit-and-miss.

Sorry I don't have the links handy, but I'm sure they can be found with Google.

[michaelalanjones]

Voice Command and Remote Desktop were not part of the WM6.1 build as far as I can tell. At least not on the one I'm using (Full version, not Lite).

You can get the CAB files for each of those and install them separately.
I looked, and lo, I found the CAB files. Thanks for the info.

[El_Frenchy]

where did you find the CAB files. I'm trying find out those file....

thanks