How To Guide SM-S918U S23 ULTRA/918U1 UNITED STATES FIRMWARE FLASHING

[sysopkotton]

12 lines, aged long standing account. Perm unlocked 10 or so phones in the last 3 years without issue. But something changed several months ago and they no longer will unless military/deployment.

TMB will do it with a business account

 

[hyelton]

TMB will do it with a business account

I would have a business account but I don't think my promos will move with it. I'll just deal with the tmo firmware for now

 

[sysopkotton]

I would have a business account but I don't think my promos will move with it. I'll just deal with the tmo firmware for now

Not sure... Send them a message through the chat option, you never know!

 

[hyelton]

Not sure... Send them a message through the chat option, you never know!

I've tried in the past. My bill would jump several hundred dollars

 

[jcsww]

@hyelton How long have you had your device? Something has changed! T-Mobile will not budge now until the device is on the network for at least 40 days for a postpaid account.

 

[hyelton]

@hyelton How long have you had your device? Something has changed! T-Mobile will not budge now until the device is on the network for at least 40 days for a postpaid account.

Had it 3 or 4 days before official lunch day. But it's been 40 days

 

[Chr0nicDreamz]

Thanks for the links. Been out of the Android game for a little bit, life took over. Flashed unlocked on my VZW branded S23 Ultra and got my features back

 

[yeltrah123]

April ota on at&t u

Do you happen to know the code I can input in the dialer to force the update on AT&T?

 

[lowkey74]

Do you happen to know the code I can input in the dialer to force the update on AT&T?

Here ya go!
*#8736364#

 

[bassman418]

Here ya go!
*#8736364#

I did this on my Verizon variant running U1 and it just locked up on this. I had to restart the phone. (Screen wasn't locked, the thing on the left just kept spinning)

just kept spinning)

 

[lowkey74]

I did this on my Verizon variant running U1 and it just locked up on this. I had to restart the phone. (Screen wasn't locked, the thing on the left just kept spinning)

View attachment 5883951 just kept spinning)

Are you good to go now?

 

[bassman418]

Are you good to go now?

Yes, now I get the normal message I've always gotten on Verizon phones. Those hidden menu numbers never worked on Verizon. I was surprised it look like something was happening the other day. But after I restarted the phone, it goes from that message above directly to this one.

 

[hayabusa1300cc]

GM!! It's that time again!!

 

[jcsww]

The update is also available for the U1 firmware. My device was converted from the TMB U to U1.

 

[ekerbuddyeker]

I am of course on public transport...

 

[Veestaai]

I am of course on public transport...

I xaa you my friend

 

[readymarc]

Really tempted to Flash. I hate their update schedule. Seeing some reports of improved battery life

 

[readymarc]

Well, I just flashed. Couldn't help it. Let's see how it turns out.

Seeing reports of improved performance and insane battery life from some users on Facebook groups.

The usual is also said about overall smoothness.

 

[butchieboy]

OP Updated with U1 April update

 

[borijess]

No U1 for ATT models yet?