How To Guide (Updated 5/21/23) How to enable N77 C-Band with 5G UW icon on OnePlus 9/9 Pro 5G (LE2115/LE2125) | Oxygen OS 11-13.1 with Custom ROM support | Verizon

[itsnebulalol]

Have you tried Nameless ROM? Though I don't think it has N77 or N260/N261 enabled, I only tested it for a limited time. Apparently StagOS has N77 enabled, but again, I could not test it as I had major issues with that ROM.

No I have not, I saw it but it says F.20 is included, but I'd like to use F.21. Maybe if I flash it with lineage recovery it'll keep F.21? No idea.

Weird that n77 is disabled but n260 and n261 aren't. Most of the time on 5G nationwide, NSG shows LTE with either 2 or 3 CA. On rare occurrences it shows NR-NSA. Either way, it's always on n2, n5, or n66.

 

[rmendez011]

No I have not, I saw it but it says F.20 is included, but I'd like to use F.21. Maybe if I flash it with lineage recovery it'll keep F.21? No idea.

I don't recommend you go to OOS 13 F.21, for some reason I cannot root it, I keep going into crash dump mode.

Weird that n77 is disabled but n260 and n261 aren't. Most of the time on 5G nationwide, NSG shows LTE with either 2 or 3 CA. On rare occurrences it shows NR-NSA. Either way, it's always on n2, n5, or n66.

N77 has been disabled since launch because at the time, the FCC hadn't done the C-Band auctions, while N260 and N261 had been active for a while.

 

[itsnebulalol]

I don't recommend you go to OOS 13 F.21, for some reason I cannot root it, I keep going into crash dump mode.

I was able to root it just fine a couple days ago. I know I flashed the apk renamed to zip but I don't remember how. I think it was in recovery.

EDIT: I might have flashed lineage recovery then flashed magisk from there. I can check in my shell history tomorrow.

 

[rmendez011]

I was able to root it just fine a couple days ago. I know I flashed the apk renamed to zip but I don't remember how. I think it was in recovery.

EDIT: I might have flashed lineage recovery then flashed magisk from there. I can check in my shell history tomorrow.

I fixed it, don't worry, and I can confirm F.21 still has N77 disabled, but my guide works without issue and you still get a 5G UW icon.

 

[itsnebulalol]

I fixed it, don't worry, and I can confirm F.21 still has N77 disabled, but my guide works without issue and you still get a 5G UW icon.

Yeah I have a newer SIM so I should be able to get the UW icon. It shows stuff about it in CellMapper.

By the way, does that Mint free trial have UC? I didn't think it does.

 

[itsnebulalol]

In 3-5 business days I should be getting a Mint sim to test if I can connect to mid band or high band. I'm sure it has better coverage than Verizon anyway, but I think I'm going to end up switching to T-Mobile. My dad can get a military discount so Magenta Max would be $120 for 3 lines. Much cheaper than Verizon.

 

[itsnebulalol]

I just MSM'd back to OOS, updated to F.21, and did the hack. I am going to flash Nameless now and hope it persists.

I wonder if SA will work once Verizon rolls it out to consumers, it has the bands and the hack should have unlocked them.

EDIT: Nameless is great, very snappy, has some extra features not in AOSP or lineage afaik. Will test soon to see if my EFS change is still there.

EDIT 2: Can't use NSG advanced mode on Nameless. Any way to fix it?

EDIT 3: Was able to get QPST to somehow work on Nameless, but only once. I figured that it worked on this ROM, so I did an ota update. But then it never showed up again. I guess tomorrow I'll MSM again. I also learned that the EFS changes do not survive an OTA, nor flashing a custom ROM. I wonder if you could back up EFS then restore after flashing.

 

[itsnebulalol]

I've given up getting it to work on a custom ROM. I dumped my modem file after using QPST to apply the hack. Opening it in a hex editor still shows generic-band-restrictions.

I'm not sure what to do. I might have to cope with OOS for now. Maybe I can replace the 77's with spaces..? I can't figure out how to flash it though.

EDIT: Replaced the 77's with spaces, and flashed it. Can't test if it works right now, but maybe tomorrow. I still can't figure out how to fix NSG on Nameless.

 

[itsnebulalol]

Got my Mint sim. Interesting that the T-Mobile 5G low band always uses NR-NSA, unlike Verizon, which uses LTE 2 or 3x CA most of the time. Haven't been able to check if my Verizon UWB fix for custom ROMs works yet.

I also went back to Lineage for working Network Signal Guru.

 

[itsnebulalol]

N77 on a custom ROM!!!! I can write a quick tutorial if anyone wants. It's more for advanced users since it requires manually editing modem.img.

 

[rmendez011]

Yeah I have a newer SIM so I should be able to get the UW icon. It shows stuff about it in CellMapper.

By the way, does that Mint free trial have UC? I didn't think it does.

Sorry for the delay, I did not get a notification for any of your replies! Yes the Mint free trial have 5G UC, but the OnePlus 9 Pro does not have a 5G UC icon.

In 3-5 business days I should be getting a Mint sim to test if I can connect to mid band or high band. I'm sure it has better coverage than Verizon anyway, but I think I'm going to end up switching to T-Mobile. My dad can get a military discount so Magenta Max would be $120 for 3 lines. Much cheaper than Verizon.

I've been wanting to switch to T-Mobile as well, what's holding me back is the no 5G UC icon, and limited mmWave, I can go down the street and find 3,500Mbps mmWave, don't think I'd find that with T-Mobile haha.

I just MSM'd back to OOS, updated to F.21, and did the hack. I am going to flash Nameless now and hope it persists.

I wonder if SA will work once Verizon rolls it out to consumers, it has the bands and the hack should have unlocked them.

SA should work, as there is a toggle in developer options for either Auto, NSA only, or SA + NSA.

EDIT: Nameless is great, very snappy, has some extra features not in AOSP or lineage afaik. Will test soon to see if my EFS change is still there.

EDIT 2: Can't use NSG advanced mode on Nameless. Any way to fix it?
View attachment 5880869

NSG did not work for me on Nameless when I tried.

EDIT 3: Was able to get QPST to somehow work on Nameless, but only once. I figured that it worked on this ROM, so I did an ota update. But then it never showed up again. I guess tomorrow I'll MSM again. I also learned that the EFS changes do not survive an OTA, nor flashing a custom ROM. I wonder if you could back up EFS then restore after flashing.

I've given up getting it to work on a custom ROM. I dumped my modem file after using QPST to apply the hack. Opening it in a hex editor still shows generic-band-restrictions.
View attachment 5881581
I'm not sure what to do. I might have to cope with OOS for now. Maybe I can replace the 77's with spaces..? I can't figure out how to flash it though.

EDIT: Replaced the 77's with spaces, and flashed it. Can't test if it works right now, but maybe tomorrow. I still can't figure out how to fix NSG on Nameless.

Woo!!!

Got my Mint sim. Interesting that the T-Mobile 5G low band always uses NR-NSA, unlike Verizon, which uses LTE 2 or 3x CA most of the time. Haven't been able to check if my Verizon UWB fix for custom ROMs works yet.

I also went back to Lineage for working Network Signal Guru.

Maybe T-Mobile has more 5G in your area? When I used to live in LA I always had NR-NSA, now that I'm in Bakersfield, I get more 4G than 5G.

N77 on a custom ROM!!!! I can write a quick tutorial if anyone wants. It's more for advanced users since it requires manually editing modem.img.
View attachment 5884573

Yes please! Will definitely be useful if OnePlus never officially enables it once the last update for the 9 Series drops, you are amazing!!

Also please let us know how you got QPST to work once on Nameless!

 

[itsnebulalol]

I've been wanting to switch to T-Mobile as well, what's holding me back is the no 5G UC icon, and limited mmWave, I can go down the street and find 3,500Mbps mmWave, don't think I'd find that with T-Mobile haha.

I can't find any mmWave near me... and it looks like all the N77 towers by me are capped at 300mbps. Max I've gotten on N77 was 299mbps.

Yes please! Will definitely be useful if OnePlus never officially enables it once the last update for the 9 Series drops, you are amazing!!

I wrote a Python script to do the patching. There's a quick guide in the readme. Feel free to tell me if I should adjust anything.

Also please let us know how you got QPST to work once on Nameless!

Same way on OOS. Don't know how it worked, but it was only once. After reflashing, it still didn't work. I've switched to Lineage since Nameless isn't open source either. Unfortunately it seems only OOS has the UW icon, but maybe there's another ROM that has added it in.

 

[rmendez011]

I can't find any mmWave near me... and it looks like all the N77 towers by me are capped at 300mbps. Max I've gotten on N77 was 299mbps.

There is a surprising amount of mmWave in Bakersfield, it's all around me. N77 in my area doesn't seem to be capped, highest I've seen was ~500Mbps down, but ping time is horrible, as there doesn't seem to be any Speed test servers in Bakersfield.

I wrote a Python script to do the patching. There's a quick guide in the readme. Feel free to tell me if I should adjust anything.

Nice! I will update my guide to include your guide, I will definetly use this whenever I decide to run a custom ROM.

Same way on OOS. Don't know how it worked, but it was only once. After reflashing, it still didn't work. I've switched to Lineage since Nameless isn't open source either. Unfortunately it seems only OOS has the UW icon, but maybe there's another ROM that has added it in.

I suspect the reason custom ROMs don't have the 5G UW icon is due to the fact that they are based off OOS 12, while the icon was added recently to OOS 13.

 

[rmendez011]

New update out, Oxygen OS 13.1, anyone updated and checked to see if N77 is enabled, or if the hack is still required?

 

[rmendez011]

Just updated to Oxygen OS 13.1, N77 is unfortunately still disabled, but my mod still works!

 

[rmendez011]

Can anyone with a factory reset LE2115/LE2125 OnePlus 9/9 Pro running the latest Oxygen OS 13.1.0.582(EX01) confirm whether or not this update officially enabled N77?

I updated my LE2125 OnePlus 9 Pro to OOS 13.1.0.582(EX01) and 5G UW N77 worked without doing my mod, not sure if OnePlus didn't touch that partition and it carried over, or they officially enabled it without mention in the update log.

 

[itsnebulalol]

Can anyone with a factory reset LE2115/LE2125 OnePlus 9/9 Pro running the latest Oxygen OS 13.1.0.582(EX01) confirm whether or not this update officially enabled N77?

I updated my LE2125 OnePlus 9 Pro to OOS 13.1.0.582(EX01) and 5G UW N77 worked without doing my mod, not sure if OnePlus didn't touch that partition and it carried over, or they officially enabled it without mention in the update log.

You could probably check the generic_band_restrictions.xml file to see if 77 is in there.

 

[rmendez011]

You could probably check the generic_band_restrictions.xml file to see if 77 is in there.

I did, and N77 is still under the excluded section, and the policies.xml file is the same as before the update, my guess is that this update is so minuscule that OnePlus didn't touch the policyman folder.

 

[itsnebulalol]

Makes sense, Oxygen Updater says it's 133 MB.

 

[rmendez011]

Makes sense, Oxygen Updater says it's 133 MB.

indeed it does, I got really excited when I saw 5G UW after the update.