SM-N950U1, installed Pie Beta. Now phone wont stay connected to cellular network.

[KMoore7580]

SInce the install I have been in a LTE, 3g, roaming, no service random loop. Wifi works fine thankfully.
I have checked for further updates, toggled airplane more back and forth multiple times.
Also checked for PRL and Profile updates with no luck.

Carrier is Sprint. Any other suggestions from the community?

 

[winol]

Get back to oreo, wait for the official Pie release

 

[KMoore7580]

Get back to oreo, wait for the official Pie release

working on that. Odin flashes are failing though.

 

[Max_Terrible]

working on that. Odin flashes are failing though.

This might mean you're on the Pie bootloader. If that is true, then there's unfortunately nothing you can do, except just wait for the official release and then flash that.

 

[Mr. Orange 645]

working on that. Odin flashes are failing though.

At what point is it failing? Does it show your phone "added" when you plug it in?

Are you by chance using Windows 10 and/or a USB3 port?

This might mean you're on the Pie bootloader. If that is true, then there's unfortunately nothing you can do, except just wait for the official release and then flash that.

There is no "Pie bootloader." Samsung has not yet updated the bootloader version. The leaked Pie builds and the official Pie beta is still on bootloader v5, so you can easily downgrade back to Oreo. Now. Once Pie is officially released, they will likely upgrade the bootloader.

---------- Post added at 09:16 AM ---------- Previous post was at 09:14 AM ----------

SInce the install I have been in a LTE, 3g, roaming, no service random loop. Wifi works fine thankfully.
I have checked for further updates, toggled airplane more back and forth multiple times.
Also checked for PRL and Profile updates with no luck.

Carrier is Sprint. Any other suggestions from the community?

The N950U1 is 100% compatible with Sprint. It supports all the Sprint bands. Sounds like maybe an APN issue. You should check those settings to make sure they are correct. A factory reset may also fix it.

 

[KMoore7580]

At what point is it failing? Does it show your phone "added" when you plug it in?

Are you by chance using Windows 10 and/or a USB3 port?



There is no "Pie bootloader." Samsung has not yet updated the bootloader version. The leaked Pie builds and the official Pie beta is still on bootloader v5, so you can easily downgrade back to Oreo. Now. Once Pie is officially released, they will likely upgrade the bootloader.

---------- Post added at 09:16 AM ---------- Previous post was at 09:14 AM ----------



The N950U1 is 100% compatible with Sprint. It supports all the Sprint bands. Sounds like maybe an APN issue. You should check those settings to make sure they are correct. A factory reset may also fix it.

Windows 10 is a yes...unsure if its a USB3 port. I have tried every port on the PC and 2 different USB cables. It does show added. It allows me to add the 4 files. Once I click start, it usually errors out within seconds with an error such as SW REV Fail then has I believe device # and a binary # on the error code. I can get this tonight if needed.

I did a factory reset last night, was a no go.

Can you recommend a legit location for accurate APN info?

 

[Mr. Orange 645]

Windows 10 is a yes...unsure if its a USB3 port. I have tried every port on the PC and 2 different USB cables. It does show added. It allows me to add the 4 files. Once I click start, it usually errors out within seconds with an error such as SW REV Fail then has I believe device # and a binary # on the error code. I can get this tonight if needed.

I did a factory reset last night, was a no go.

Can you recommend a legit location for accurate APN info?

As far as a source for the APN. I would just google Sprint APN settings. It may even be on Sprint's website, or you can call Sprint CS.

For your ODIN failure. That's an easy fix for that error code. You are trying to downgrade to an Oreo build that is TOO old. It has to be a newer Oreo build with bootloader v5. Just download the SamFirm tool (Google is your friend) and use it to download the most recent Sprint firmware. For model use SM-N950U and for Region I believe it's either XAS or SPR. I can't remember. Then flash it with ODIN.

But the Pie beta SHOULD work with Sprint. There's something else going on there.

 

[Saafir]

If you do not know if you are using a 3.0/3.1 USB port, you should refrain from doing such technical activities. You break your device and now it's up to the good folks here to spoon feed you a fix. Very irritating. I'm going with you are not using the official Odin to flash stock firmware. Do not use the patched Odin for anything except flashing Pie build. Sigh. Pull your SIM Card and reinsert. Should fix network issues.

Windows 10 is a yes...unsure if its a USB3 port. I have tried every port on the PC and 2 different USB cables. It does show added. It allows me to add the 4 files. Once I click start, it usually errors out within seconds with an error such as SW REV Fail then has I believe device # and a binary # on the error code. I can get this tonight if needed.

I did a factory reset last night, was a no go.

Can you recommend a legit location for accurate APN info?

 

[KMoore7580]

If you do not know if you are using a 3.0/3.1 USB port, you should refrain from doing such technical activities. You break your device and now it's up to the good folks here to spoon feed you a fix. Very irritating. I'm going with you are not using the official Odin to flash stock firmware. Do not use the patched Odin for anything except flashing Pie build. Sigh. Pull your SIM Card and reinsert. Should fix network issues.

Love the condensing tone, really helps make your point. Ive had little problem in the past flashing. This one had me stumped. As to the usb port, it's my wife's laptop, so I wasn't paying attention. Seeing as the guide that is posted here made no mention of usb type or windows version, I assumed there was no issue as long as Odin saw and added the phone. I am using official Odin, thanks. I pulled the sim already, no change.

 

[Saafir]

Condensing tone.. That's great. USB 3 ports are generally Blue btw.

Love the condensing tone, really helps make your point. Ive had little problem in the past flashing. This one had me stumped. As to the usb port, it's my wife's laptop, so I wasn't paying attention. Seeing as the guide that is posted here made no mention of usb type or windows version, I assumed there was no issue as long as Odin saw and added the phone. I am using official Odin, thanks. I pulled the sim already, no change.

 

[KMoore7580]

For your ODIN failure. That's an easy fix for that error code. You are trying to downgrade to an Oreo build that is TOO old. It has to be a newer Oreo build with bootloader v5. Just download the SamFirm tool (Google is your friend) and use it to download the most recent Sprint firmware. For model use SM-N950U and for Region I believe it's either XAS or SPR. I can't remember. Then flash it with ODIN.

This was the problem, thanks!! The thread I was using listed a build as recent, but i guess it wasn't recent enough. I am now flashed and back to Oreo. Although I am not speaking with Sprint in regards to the network situation as flashing back did not resolve the problem. Thanks for all the help!

 

[Shadow Assassin]

This was the problem, thanks!! The thread I was using listed a build as recent, but i guess it wasn't recent enough. I am now flashed and back to Oreo. Although I am not speaking with Sprint in regards to the network situation as flashing back did not resolve the problem. Thanks for all the help!

As far as your network issue. Try typing or copy and paste this *#*#4636#*#* into your dialer/ tap device info/ network type. I try using "TD-SCDMA/CDMA/UMTS" if it is already set to that, use one of the ones with LTE.

 

[Max_Terrible]

For your ODIN failure. That's an easy fix for that error code. You are trying to downgrade to an Oreo build that is TOO old. It has to be a newer Oreo build with bootloader v5.

So I was 50% correct, was just wrong on what bootloader version he has