Cannot get system upgrade for G710ULM

[ccheung]

I got my new unlocked G7 from ebay. I cannot get any over-the-air software update. I am using it in T-Mobile have no problem of using wi-fi calling, and HD calling.

Its software version is still G710ULM11g, Security patch level is Nov 1, 2018.
The Hardware info: Model number: LM-G710ULM, but the S/N displays nothing in it.

Any suggestion how to upgrade the software?

 

[brigantti]

You need to upgrade manually.your phone most likely was sprint and the seller flashed with ulm software thats why you cannot update ota.

Use this procedure on this thead
https://forum.xda-developers.com/lg-g7-thinq/how-to/cross-flash-oreo-pie-firmwares-lg-g7-g7-t3915303

And flash pie ulm.

 

[coolrevi]

I got my new unlocked G7 from ebay. I cannot get any over-the-air software update. I am using it in T-Mobile have no problem of using wi-fi calling, and HD calling.

Its software version is still G710ULM11g, Security patch level is Nov 1, 2018.
The Hardware info: Model number: LM-G710ULM, but the S/N displays nothing in it.

Any suggestion how to upgrade the software?

No S/N, Its a cross flashed variant. Flash manually. But if you wanna fix S/N you have to send it to LG authorized service center:fingers-crossed:
You can use your IMEI to get the right firmware. https://lg-firmwares.com/series/lg-g7-thinq/ search here. Flash it manually using lg up

 

[glock22c]

I got my new unlocked G7 from ebay. I cannot get any over-the-air software update. I am using it in T-Mobile have no problem of using wi-fi calling, and HD calling.

Its software version is still G710ULM11g, Security patch level is Nov 1, 2018.
The Hardware info: Model number: LM-G710ULM, but the S/N displays nothing in it.

Any suggestion how to upgrade the software?

Like the others have said, more than likely it was a Sprint phone (g710PM) flashed to a g710ULM. Go to IMEIPro or a similar IMEI checking site, enter your IMEI, and most likely it'll say g710PM. Literally just went thru this 2 days ago with a phone from Ebay, but I'm sending the phone back. Seller never disclosed it and I don't want to bother with some of the potential issues/shortcomings. Like they also said, you should be able to flash other roms on it, but be aware that future over the air updates are not going to happen, and others have had varying levels of success with getting Google Pay to work on the phone. This might be no big deal, but just putting it out there. Good luck dude.

 

[ccheung]

Like the others have said, more than likely it was a Sprint phone (g710PM) flashed to a g710ULM. Go to IMEIPro or a similar IMEI checking site, enter your IMEI, and most likely it'll say g710PM. Literally just went thru this 2 days ago with a phone from Ebay, but I'm sending the phone back. Seller never disclosed it and I don't want to bother with some of the potential issues/shortcomings. Like they also said, you should be able to flash other roms on it, but be aware that future over the air updates are not going to happen, and others have had varying levels of success with getting Google Pay to work on the phone. This might be no big deal, but just putting it out there. Good luck dude.

I am in the same boat as yours, got it from ebay said new ULM, it even has sticker with ULM marked on it. But now I checked, it is g710PM. Too bad its too late to return. Next time, I won't buy phone unlock in ebay.

 

[ccheung]

No S/N, Its a cross flashed variant. Flash manually. But if you wanna fix S/N you have to send it to LG authorized service center:fingers-crossed:
You can use your IMEI to get the right firmware. https://lg-firmwares.com/series/lg-g7-thinq/ search here. Flash it manually using lg up

I checked it original is g710PM. Can I just directly flash the latest ULM firmware on it?

 

[Malzmeier]

Hi,
I also bought one of the PM to ULM crossflashed phones from eBay.
I managed to flash newest ULM firmware, but still have the missing S/N issue and the phone is not passing Safetynet CTS check. So I can‘t install Netflix on the phone.
Has anybody a solution to fix theses Issues? Manual flashing instead of OTA is no problem, but Safetynet sucks.

 

[haseeb4bros]

Hi,
I also bought one of the PM to ULM cs phones from eBay.
I managed to flash newest ULM firmwa h 852
re, but still have the missing S/N issue and the phone is not passing Safetynet CTS check. So I can‘t install Netflix on the phone.
Has anybody a solution to fix theses Issues? Manual flashing instead of OTA is no problem, but Safetynet sucks.

How did you flash the latest firmware and are there any side effects besides netflix?
Can you provide a link to the thread if there is one for flashing this.