[adamg187]

EDIT: Fixed link

1.
Download 3.8 OS install file
http://www.t-mobileapps.com/download..._3_8_0_128.exe

2.
Go To Control Panel – Add/Remove Programs - Uninstall Desktop Manager 4.0

3.
Go To Start - Search for vendor.xml file and delete

4.
Run 3.8 OS install (downloaded from step 1)

5.
Allow it to downgrade all 7100 applications (including apps like breakbreaker, browser, etc)

6.
Allow software to Backup your data from your 7100 to your PC. On the last step of the OS install it will try to restore backup files and will HANG –
Unplug and plug-in the 7100 on the USB connection to get it to exit the program.

7.
Reinstall Desktop Manager 4.0 and Run program
(Downgraded version of 7100 should sync with software, if it doesn’t repeat steps 2 and 7)

8.
Select “Backup and Restore” icon – Now select Restore – choose backup file (created to backup data in step 6). now CANCEL restore operation
(if you don’ t cancel in time it will lockup on Bluetooth options, repeat steps 2 and 7).

9.
Select Advanced (The data file will already be loaded) – In the Left Frame Select “Bluetooth Options” and Delete it. Now Save/Exit the advanced menu.

10.
Select Restore (again) – this time run the restore function. It should upload all your data to your 7100 without hanging.

It may take up an hour for your internet and phone to be fully operational (after about 90 minutes and a few hard reboots I was up and running).

The 7100 will run and sound better than ever, but BES users will lose wireless sync function as 3.8 does not support that feature.

Please let me know if any clarification is needed on these instructions.
thanks,
AP

[texasag90]

Can someone elaborate on "wireless sync function." I am not sure what this is. I reserve the right to say Doh! later...

[adamg187]

Originally Posted by texasag90

Can someone elaborate on "wireless sync function." I am not sure what this is. I reserve the right to say Doh! later...

I think it allows BES users to have over-the-air sync of their calender from outlook.

[texasag90]

Well, that is sort of why I am asking. I downgraded to 3.8, and my calendar sync is still working great...

[flonman]

Really? what about contacts sync? Is it still working wirelessly?

[texasag90]

No, but it never was. It is not supported by our BES guys. Not sure why (I did not actually know that contact sync was possible).

[djseto]

The link doesnt work to the old software

[adamg187]

Originally Posted by djseto

The link doesnt work to the old software

Should work now.. thanks

[djseto]

Originally Posted by adamg187

EDIT: Fixed link

8.
Select “Backup and Restore” icon – Now select Restore – choose backup file (created to backup data in step 6). now CANCEL restore operation
(if you don’ t cancel in time it will lockup on Bluetooth options, repeat steps 2 and 7).

9.
Select Advanced (The data file will already be loaded) – In the Left Frame Select “Bluetooth Options” and Delete it. Now Save/Exit the advanced menu.

Will this cause me to lose Bluetooth headset support????

[richard371]

Does the phone really sound perfect now with 3.8?

[djseto]

This sucks. I have done steps 2-7 three times and it still wont synch with desktop manager 4.0...anyone know where I can download desktop manager 3.8?

EDITED: Fixed

[djseto]

Now it will NOT pair with my bluetooth headset. it detects it, but when I select it to pair, it never prompts me for the pair code...ahhhhhhhhhhhhhhhhh

[adamg187]

Originally Posted by djseto

Now it will NOT pair with my bluetooth headset. it detects it, but when I select it to pair, it never prompts me for the pair code...ahhhhhhhhhhhhhhhhh

i saw on another post that ajstan99 downgraded to 3.8 because he found that his bluetooth headset was louder under this OS. You may want to PM him to see if he has any tips for you (sorry i don't have a bluetooth headset yet and can't help).

[adamg187]

Originally Posted by djseto

Will this cause me to lose Bluetooth headset support????

It should result in the default 3.8 bluetooth setting remaining on the phone.

[texasag90]

Originally Posted by richard371

Does the phone really sound perfect now with 3.8?

Well, in my case, people stopped complaining.

[mok7100]

Originally Posted by adamg187

EDIT: Fixed link

1.
Download 3.8 OS install file
http://www.t-mobileapps.com/download..._3_8_0_128.exe

etc...
AP

Ok, I have a 7290- will this procedure work for that device as well?

Also, can you elboarate on step #5,
"5.
Allow it to downgrade all 7100 applications (including apps like breakbreaker, browser, etc)"

Are you saying that it will ask me if I want to down grade the apps?

Thanks,

-Marc

[richard371]

Now my o2 theme fonts look like crap no matter what I set it to.

[TXBBUSER]

I have a problem. I have completed steps 1 through 4, but that's where everything stops. Nothing ever starts to downgrade, no Backup, etc. Am I supposed to do something? I have the BB plugged in to my computer when I run the install. Should I do something?

[internetizen]

Just want to let you know that I think downgrading may in fact erase the message service. ie. you can no longer send email from your device. Has anybody else have the problem? I am going back to 4.0 instead and see if that corrects the email problem.

I downgraded by wiping the device using the javaloader. I have not placed any long calls on the device so I cannot confirm whether the process would improve the dropped calls / reboot issue. I am inclined to forward my calls to a land line and just use it for emergency (short calls) and the email functions.

[internetizen]

I am using a 7100t in Central New York with T-Mobile