How To Guide [TMO] OOS/COS DATA FIX

[Libra420T]

TO CLARIFY THIS IS A ROOT ONLY FIX​

​

After gaining root install given module.
Data is now retained. Even after reboot(s).
No empty slot or waiting.
Issue is TMO variant is showing multi sim.
So props were added to make it like a conversion to single sim....
Yes module works for both models.
Install & enjoy
Extract and pull it apart if interested .

Please give amazing thanks
to @twinnfamous for building module & bringing this data/sim nightmare to an end ​

 

[kelvin216]

Hi,
This is working great, I have flashed and rebooted multiple times with no signal loss, great work, thanks for this.

Now that Tmo has a new update out, will this need to be flash when I update to the new Tmo modem?

 

[Libra420T]

Hi,
This is working great, I have flashed and rebooted multiple times with no signal loss, great work, thanks for this.

Now that Tmo has a new update out, will this need to be flash when I update to the new Tmo modem?

I guarantee 9.9 is not the fix
Yes, will have to, until Tmo A12 hopefully fixes it. But don't get your hopes up

 

[jruizdesign]

I was able to successfully keep 5g mobile data on Android 12 using your module.
Thanks a ton.
I had also followed the other guide for data retention and that works great until the ob1 is installed, then your tool was needed to bring the modem back that was retained by his process.
But after combining the two guides and being successful so far, do you think I'd be able to take the latest c44 update, reflash your module and have my 5g return? Or are the stables garunteed to break it.?

 

[Libra420T]

After updating c44 via update, then installing module data_fix? Should be fine. Honestly prop is so simple it should always work

 

[jruizdesign]

After updating c44 via update, then installing module data_fix? Should be fine. Honestly prop is so simple it should always work

damn updated to c44 and flashed your fix, but it only gave me 4g, and h+.


Flashing the global variant for 2125 fixed the issue

 

[Libra420T]

damn updated to c44 and flashed your fix, but it only gave me 4g, and h+.

Check Network settings
And check phone info using dialer command and switch "preferred networks" see if that helps. Otherwise should be no issue ...
*#*#4636#*#*

 

[jruizdesign]

Check Network settings
And check phone info using dialer command and switch "preferred networks" see if that helps. Otherwise should be no issue ...
*#*#4636#*#*

That dialer code doesn't work on a12 , preferred networks doesn't even show 5g or lte, just 2/3/4g/

 

[twinnfamous]

That dialer code doesn't work on a12 , preferred networks doesn't even show 5g or lte, just 2/3/4g/

Are u on color os or oxygen os and what version eu or na

 

[jruizdesign]

Are u on color os or oxygen os and what version eu or na

Oxygen. I have a 2127 from T-Mobile converted to 2123 eu c44

 

[twinnfamous]

Oxygen. I have a 2127 from T-Mobile converted to 2123 eu c44

Try c.44 na version

 

[jruizdesign]

Try c.44 na version

That's 2125 right? How do I update to the same version?

 

[twinnfamous]

That's 2125 right? How do I update to the same version?

Use the full zip to update to the 2125 version c.44

 

[jruizdesign]

Use the full zip to update to the 2125 version c.44

The strange thing is that even though I'm on EU right now I have no local upgrade option in my system updates...can I flash in a temporary boot twrp?

 

[twinnfamous]

The strange thing is that even though I'm on EU right now I have no local upgrade option in my system updates...can I flash in a temporary boot twrp?

Yes if u can do adb sideload or take password or pin off phone and boot TWRP u should see internal data to flash zip

 

[jruizdesign]

Yes if u can do adb sideload or take password or pin off phone and boot TWRP u should see internal data to flash zip

I've been trying all day to do this, twrp won't mount anything, with or without password it won't decrypt and the android recovery is useless. I am not trying to manually flash each item from the payload.

 

[twinnfamous]

I've been trying all day to do this, twrp won't mount anything, with or without password it won't decrypt and the android recovery is useless. I am not trying to manually flash each item from the payload.

Have you factory reset after you updated to a12 ? If so that's why TWRP won't see internal storage. Did you try to sideload the zip? I've used adb sideload to flash zips Everytime I screwed the phone up

 

[jruizdesign]

Have you factory reset after you updated to a12 ? If so that's why TWRP won't see internal storage. Did you try to sideload the zip? I've used adb sideload to flash zips Everytime I screwed the phone up

No I've been avoiding wiping system at all costs, it seems like Everytime it gets set up I have to start all over

 

[tancam]

How do you local upgrade in a12? I'm on c44

 

[jruizdesign]

How do you local upgrade in a12? I'm on c44

Download the version you want to install from oxygen updater then install the app from this post so you local upgrade

Post in thread '[TMO] 9 PRO MODEM RETENTION' https://forum.xda-developers.com/t/tmo-9-pro-modem-retention.4292445/post-86328243