yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy S22 Ultra] yocoxy:
When i try and enable dss i get a message saying nr dss not support.

i have the U version and have installed the latest u1 firmware.

im trying to unlock 5g 78 to use in the uk
[Samsung Galaxy S22 Ultra] Romeo Nickolas:
What is your exact phone model?
[Samsung Galaxy S22 Ultra] yocoxy:
Sm-g988u but I have installed sm-g988u1 xaa xaa xaa vzw android 13 one UI 5.1
[Samsung Galaxy S22 Ultra] Romeo Nickolas:
So you're on the wrong thread this is for s22.

You have s20.

I have Note 20 for a year same modem with s20 and I can assure you that you won't unlock n78 on that device I also tried everything. Even if you unlock it the anchor band for 5G NSA is locked also and can't be change on the firmware so sad to say you have to give up. You won't see any other fix for that.

The only way is to upgrade your phone or buy the same model of the phone from your country.
[Samsung Galaxy S22 Ultra] yocoxy:
Ah ok, I've managed to get LTE+ at least. Bought the phone off eBay and didn't realise it was the u version. Wondered why my signal was terrible for months
[Samsung Galaxy S22 Ultra] Romeo Nickolas:
Yes carrier aggregation is the only thing you can unlock using this method.
[Samsung Galaxy S22 Ultra] HackerApollo:
Purchased an S908U1 from Amazon and slotted in my Verizon SIM card from the previous phone. I want to see if my device supports all of the 5G bands and can access all the ones I want to. Is there any benefit for me to try this?
[Samsung Galaxy S22 Ultra] nnighthawk:
Not really. If you have to ask, then it's probably best to not enable them as it serves no real purpose if you're just using Verizon.
[Samsung Galaxy S22 Ultra] seaephpea:
Hi.

I followed this guide on a US S21 FE. It enabled some, but I'm still missing LTE band 8 and 5G band 1. (Results picture below.) Have I done something wrong? Is it possible to enable any more?

Thanks in advance!

View attachment 5955537
[Samsung Galaxy S22 Ultra] Rushit_123:
I have buy s22 ultra 5g From germany My model number is that SM-S908B/DS Still 5g is not working in india what that solution ?
[Samsung Galaxy S22 Ultra] Romeo Nickolas:
This methods only works on U U1 and W version yours is B/DS it has different modem so the methods here won't work.
[Samsung Galaxy S22 Ultra] Romeo Nickolas:
So I tried to update my software if the problem when connected to 5G the signal goes off is fixed, but no luck it still keeps turning off.

And I'm so dumb I didn't check that they already updated the binary to 3 so I can no longer go back to the old software.

I don't know if samsung intentionally do this for non US carrier so the 5G can't be used outside US.

N41 with anchor band LTE 1 or 3 is the frequency here and it keeps signal/radio turns off once it's connected.

Anyone also experiencing this?

View attachment 5970903

Update:

After hours of testing all 5G settings with several phone restarts I found the culprit haha
[Samsung Galaxy S22 Ultra] userdied13:
I am not able to make phone calls when i am using 5g network,

although 5g is working great.
[Samsung Galaxy S22 Ultra] jcsww:
Not all carriers support 5G SA and just because your device displays 5G doesn't mean you are in an area that supports 5G SA.
[Samsung Galaxy S22 Ultra] Romeo Nickolas:
I think you're talking about VoNR. Voice Over New Radio (5G)
[Samsung Galaxy S22 Ultra] jcsww:
5G SA (stand alone), which is needed for VoNR to work. Not all 5G bands support SA. Most are NSA (non stand alone) that require 4G LTE or 3G for calls
[Samsung Galaxy S22 Ultra] Romeo Nickolas:
He's talking about calling and he's 5G is ok I assume he's phone number isn't activated for VoNR.

Coz if he's on 5G NSA he can use the call via VoLTE since NSA aggregates with LTE so it's connected on both LTE and 5G NSA.

So I assume he locked it to 5G only which will connect him to 5G SA and if you're sim isn't VoNR activated you can't call anyone.

So let's just ask him.
[Samsung Galaxy S22 Ultra] Romeo Nickolas:
Can you screenshot your network information type *#0011# on dial pad.

Did you lock it on 5G only?

Is your sim VoNR activated?
[Samsung Galaxy S22 Ultra] kano.isr:
Hi , i am using s21 snapdragon sm-g991w , CSC XAC , android 13 oneui 5.1 . I need help enabling the band 28 lte.

I did all the B method steps succesfully but when i enter the codes nothing happens and i am unable to access the rf test or service menu.

First time doing this i would apreciate any help.
[Samsung Galaxy S22 Ultra] wr3cckl3ss1:
Linux localhost 5.10.81-android12-9-24339823-abS908U1UEU2AVF1 #1 SMP PREEMPT Sat Jun 4 06:13:19 UTC 2022 aarch64

b0q:/data/local/tmp # id

uid=0(root) gid=0(root) groups=0(root),1004(input),1007(log),1011(adb),1015(sdcard_rw),1028(sdcard_r),1078(ext_data_rw),1079(ext_obb_rw),3001(net_bt_admin),3002(net_bt),3003(inet),3006(net_bw_stats),3009(readproc),3011(uhid),3012 context=u:object_r:unlabeled:s0

b0q:/data/local/tmp # whoami

root

👀👀👀👀
[Samsung Galaxy S22 Ultra] Romeo Nickolas:
You're on XAC so you're on canadian firmware. As you can read on the first step you need to flash U1 firmware first, don't worry you can flash W firmware again after you unlock the codes, that's why it's not working.
[Samsung Galaxy S22 Ultra] Romeo Nickolas:
Did you succesfully root the SM-S908U1 with the latest firmware?
[Samsung Galaxy S22 Ultra] wr3cckl3ss1:
No...AVF1
[Samsung Galaxy S22 Ultra] Romeo Nickolas:
Ow it's a 2022 firmware too bad I'm on bootloader 3 now. I can no longer downgrade. Will you release it publicly?
[Samsung Galaxy S22 Ultra] wr3cckl3ss1:
Damn that sucks. And it's not mine to begin with and it's been out for almost a week publicly..... GitHub is the new XDA without the drama..crying and millions of leeches...

You're welcome....lol

GitHub - Markakd/bad_io_uring: Android kernel exploitation for CVE-2022-20409

Android kernel exploitation for CVE-2022-20409. Contribute to Markakd/bad_io_uring development by creating an account on GitHub.

github.com
[Samsung Galaxy S22 Ultra] Romeo Nickolas:
They didn't put more keywords about rooting like "how to root s22 or pixel" so it won't show up on google search results, that's why you can't find it easily, and now it's too late for those who updated to the latest firmware 😅
[Samsung Galaxy S22 Ultra] wr3cckl3ss1:
I know...and that's why it's better like that. You just have to be following the correct ppl to know things like this...but luckily...since I already had contact with the developer on Twitter regarding his other project, DirtyCred, he sent me a message telling me about new project that he dropped....so either way..it's a win win....and don't ask....I already asked about DirtyCred directly and he said.... STILL WAITING FOR APPROVAL by GOOGLE....it must be pretty bad...if it's been past a year since he announced it...
[Samsung Galaxy S22 Ultra] Romeo Nickolas:
I didn't read it's only a week ago. I won't blame them coz it's our fault if we updated the firmware without checking the bootloader with rooting in mind.

Yes this exploit should be used in a good way and it's understandable if he released it late. Thank you for the information about this.
[Samsung Galaxy S22 Ultra] wr3cckl3ss1:
I'm all for sharing with the community responsibly and letting the community know the warnings and consequences. But as always, there's a group of ppl that ruin it for everyone unfortunately. As of lately, I've been displaying NEW SYSTEM SHELL (NOT SMT) on even JULY firmware, affecting a lot of devices but I don't know if I want to even release it here or anywhere due to the fact, that there's always complaining, that something doesn't work...etc. And i don't want the headache all over again from k0mraid3's SMT. I even have a GitHub page already setup for new system shell but idk...i think I might shut it down. But anyways, to those interested, If you have an S22 Ultra on REV 2....and you want a ROOT SHELL (NOT Magisk)...I'd advise downgrading to firmware before OCT 2022 to get access to ROOT. Follow directions on the GitHub page....I'll link again...very closely and your good to go. And please don't ask me for any help, ask the actual DEV of it....

GitHub - Markakd/bad_io_uring: Android kernel exploitation for CVE-2022-20409

Android kernel exploitation for CVE-2022-20409. Contribute to Markakd/bad_io_uring development by creating an account on GitHub.

github.com
[Samsung Galaxy S22 Ultra] bloodkiddie:
I have unlocked all the bands as mentioned in this but I'm not sure why some SA band is not unlocked for exmaple 258 SA is not unlocked. Is it not supported by S22 ultra ?
[Samsung Galaxy S22 Ultra] nnighthawk:
mmWave SA is not supported on that phone but don't worry about it
[Samsung Galaxy S22 Ultra] AdieB67:
Hi. I have the exact same assue, did you manage to enable band 1 on 5g for this phone
[Samsung Galaxy S22 Ultra] milton e:
Is this only for the s21u or can I attempt on sm325f/ds
[Samsung Galaxy S22 Ultra] AdieB67:
Hi, I have a S21+ and this thread has helped me enable some of the 5g channels on my SM-G966UI (even though this thread is for the S22)

But does anyone know if there is a way of enabling channel 1 on 5g, as I am in the UK and it is frequently used (images attached)

I have read the full thread and tried all options mentioned for the S22.
[Samsung Galaxy S22 Ultra] Jack80:
Good evening,

I have an S22 SM-901U1 smartphone and I don't have 4G+ in France, only 4G.

So, I wanted to deactivate the Ca check combo but I wanted to know why a deactivated check allows me to have 4G+

Moreover, does it not modify the Das?

Regards,
[Samsung Galaxy S22 Ultra] Jack80:
Good morning,

Is there someone to answer my question

Thanks you
[Samsung Galaxy S22 Ultra] Romeo Nickolas:
Did you enable this one

Service Mode Main Menu -> UE SETTING & INFO -> SETTING -> SYSTEM -> Next page 4 times -> SET LTE BAND CONFIG -> SET DEFAULT LTE BAND.

If yes may I ask what carrier are you using?
[Samsung Galaxy S22 Ultra] Jack80:
Thank you for this feedback.

Yes it is activated and I use Red Sfr.
[Samsung Galaxy S22 Ultra] Romeo Nickolas:
So when ca combo check is disable you get 4G+ and that's what you want to know? So you have no problem activating 4G+ just a question why it CA should be disabled am I right?
[Samsung Galaxy S22 Ultra] Jack80:
So when ca combo check is disable you get 4G+ and that's what you want to know?

In fact, I haven't done the manipulation yet because I wanted to know if my problem came from that and how to disable the combo, it allows 4g+?

Does this mean that European smartphones are set up like this from the start?
[Samsung Galaxy S22 Ultra] Romeo Nickolas:
Idk but I'll give you a trick if the modem has a separate configuration for your carrier which is sfr with CSC SFR lets trick the modem that your using SFR CSC.

Using the method in this thread.

I changed the GCF to SFR on this tutorial.

Go to: Service Mode Main Menu -> PROTOCOL STATE -> PROTOCOL SIMULATION -> IMEI PRE CFG SIMULATION.

In this menu, click [1] AP, then click [1] click then input key_input then type this number 837082 (converted SFR characters to ASCII).

Then click [2] NET1 and then click [1] Click then input key_input then type this number 837082 as well. Do the same for [3] NET2.

You should see the SFR letters.

Press [4] Write. Then restart phone.

Then check if you'll get proper LTE and 5G ca combos on the AS info and you don't have to change anything on the service menu.

It will only unlock the required band on your carrier too. Not all bands will be unlocked.

If there's no separate setup on SFR carrier you won't get CA combos on the AS info just "prune_ca_combo no exist"
[Samsung Galaxy S22 Ultra] Jack80:
Bonne soirée,

Merci pour ce retour mais je ne comprends pas très bien.

J'ai 1 CSC en XAA

Vous voulez que je mette SFR à la place ?

Pouvez-vous me mettre 1 lien du tutoriel original, s'il vous plaît
[Samsung Galaxy S22 Ultra] Romeo Nickolas:
English please btw here's a video tutorial.
[Samsung Galaxy S22 Ultra] Ankeshsharma:
I have and SM-G988U1 Tried Band Unlock , All the Bands Unlock but Unlike N77 and N78 are not Unlocked can anyone help on this.

I have SM-G988U1 XAA/ATT Although all the SA and NSA Bands Unlocked but Still N77 & N78 Bands are not Unlocked i am on Andriod 13 and UI5.1 Any Help on this as in India I am not Able to use 5G for Reliance Jio Telecom. Any Help on This.
[Samsung Galaxy S22 Ultra] Romeo Nickolas:
I can confirm that there's no n78 on U1 S20 and Note20 and maybe n77 too so there's no way to unlock it. If you tried the GCF trick it will unlock all possible band that support the device or the firmware so if the band you want doesn't show up it is not supported.
[Samsung Galaxy S22 Ultra] Ankeshsharma:
Does it Means that SM-G988U1 hardware doesnt have N78 Band or It is CSC in Which it cannot be enabled. and What if i Install any other Firmware i.e Japan SGC03 has it has N77 & N78 Snapdragon Version.

Thanks in Advance
[Samsung Galaxy S22 Ultra] Romeo Nickolas:
I'm on a note 20 before I got s22 and I researched a lot and I concluded that there's no way. Based from my research US phone modem soldered differently from other snapdragon variants. So firmware is not the problem it's the hardware so it is really not possible.

Even you unlocked it if your country is on 5G NSA and has different LTE anchor band on the US 5G still won't connect.
[Samsung Galaxy S22 Ultra] Ankeshsharma:
So Does This Work on S22 Ultra US Variant.
[Samsung Galaxy S22 Ultra] Romeo Nickolas:
Yes S22 is different it will unlock all the supported bands and anchor bands.
[Samsung Galaxy S22 Ultra] Ankeshsharma:
Thanks a Lot I have Tried Every Step Supported Firmware Thought it will Work even In the Sevice Menu it also Shows N77 & N78 but it is Asking to Add PLMN so i ma not able to Know that. But Anyways it doesnt matter.

Thank you.
[Samsung Galaxy S22 Ultra] Romeo Nickolas:
Are you talking about s22 or your s20 device?
[Samsung Galaxy S22 Ultra] Ankeshsharma:
I am having S20 Ultra 5g SM-988U1, this i have explored in Service Menu.

Whatever Experiments i have done is on S20U
[Samsung Galaxy S22 Ultra] Romeo Nickolas:
Sad to say is you need to give up now. Upgrading to s22 is the only way to get 5G. I'm frustrated too but I'm lucky that my sister upgrade her phone so I get this 1 year old s22 ultra for free.
[Samsung Galaxy S22 Ultra] Ankeshsharma:
Yup I will have to wait till someone form US gets it for Me, Anyways Thanks A lot for Helping the Members with Knowledge.

I am finding it very delightful that XDA is Great in Helping and Sharing the Knowledge.
[Samsung Galaxy S22 Ultra] Jack80:
Good evening,

Thank you for this feedback.

Why can't I use GCF ?

If I understood correctly, I directly use method 2 which activates less than method 1?
[Samsung Galaxy S22 Ultra] Jack80:
Hello,

Up
[Samsung Galaxy S22 Ultra] Romeo Nickolas:
OMG I already explained it 😅

If you don't have any problem unlocking 4G+/LTE+ and 5G and you are only curious why you should disable something just to get it. Just enjoy your device don't ask question that isn't important. We don't need to know how the modem works especially if the modem is configured overseas. Thank you. I'm done answering your questions.
[Samsung Galaxy S22 Ultra] Jack80:
I don't understand your answer.

My smartphone has 4g+ which does not work in France because it is 1 S22 American. CSC code: XAA.

I would like to make it work with my operator Red Sfr.

I wanted to know if it was better to use method 1 or method 2 as you told me to activate only 4g + 5g for the moment, I don't care because no 5g subscription.

And I also wanted to know whatever the method if it could make the phone bug
[Samsung Galaxy S22 Ultra] Ankeshsharma:
As i come to know that S20U SM-G988U Doesnt have the Hardware Capabilities to Run N78 and N77 Bands even if you unlock all Bands one cannot go beyond the Hardware Capabilities.
[Samsung Galaxy S22 Ultra] Romeo Nickolas:
Yes but this josh just curious why he needs to deactivate combo check just to get 4G+. And I suggested a way if the modem has different configuration for his carrier then I tried it personally and there's none.

I tried the unlock CSC in my country which is XTC on the simulation settings and I get proper CA COMBO on both LTE and 5G and maybe some proper configuration on other settings too so I confirmed there's a separate configation on my countries carriers on this modem.

And his has none.
[Samsung Galaxy S22 Ultra] Ankeshsharma:
I think the Only thing Matter is which 5g Band your carrier is using in my case N78 & N77 and S20 Ultra SM-G988U has the Following Bands:

2, 5, 41, 66, 71, 260, 261 SA/NSA/Sub6/mmWave - SM-G988U

and Best part is LTE+ I am getting.

Any other Information you can share will be Helpful.
[Samsung Galaxy S22 Ultra] Romeo Nickolas:
Yeah the unlocking of bands is only the only important thing here not your curiosity on how it works since you bought a phone that is configured on different country.
[Samsung Galaxy S22 Ultra] Ankeshsharma:
Settings in service mode i have explored everything but nothing improved.
[Samsung Galaxy S22 Ultra] Ankeshsharma:
The Only Thing i ignored it that i didnt Researched before buying it.

Hehehe Then only i came to know that it is not configured to India and for a specific Carrier.

So not have deep dive in the forum and came to know the other things about it.
[Samsung Galaxy S22 Ultra] Romeo Nickolas:
I'm talking about josh question not yours. S20 and note 20 has no chance to get the band you want.
[Samsung Galaxy S22 Ultra] Ankeshsharma:
Yes Every CSC has Some Settings Disabled according to the Carrier Specific and my Advice to all While Changing CSC, Be very sure that you have not inserted the SIM Card as in my case my SIM Card was Damaged.
[Samsung Galaxy S22 Ultra] ivanox1972:
I can't pass through waiting for diag anyhow. Doing all according to manual, app sees my phone on com port 3 but stack on waiting for diag. I change option as on manual with *#0808, it changes to com port 6 and again waiting for diag always
[Samsung Galaxy S22 Ultra] Romeo Nickolas:
The changing CSC on the simulation settings is different from changing CSC from the software using samfw tool so sim ejection isn't required.
[Samsung Galaxy S22 Ultra] Ankeshsharma:
i Tried Changing CSC from Samfw Tool But it Doesnt Allowed to Change CSC it Got Failed, and when i Changed the CSC in protocol Simulation i Selected USC and After it My Sim card was fired, i have to get it reissued from the operator.
[Samsung Galaxy S22 Ultra] Ankeshsharma:
Which Phone and what you are trying to do.
[Samsung Galaxy S22 Ultra] Ankeshsharma:
I Tried changing CSC through Samfw but not able to Change "running Exploit Fail"

then i changed it to GCF.

can we unlock boot loader through samfw??
[Samsung Galaxy S22 Ultra] ivanox1972:
@Ankeshsharma I have s22 ultra 908u on tmobile csc and firmware newest, I use phone in Europe, it is now factory unlocked, no problem with Serbia sim card. I want to unlock 4g+ so tried procedure. I stuck on step to enable *#27663368378# with samfw because this code not working from box... Samfw sees my phone, but stack on waiting for diag. I tried procedure fhich is explained, dialing *#8080 and change mtp option. It is done but still cannot pass through waiting for diag...

I had recently s20 ultra on U1 firmware and and all was done as described but passed waiting for diag
[Samsung Galaxy S22 Ultra] ivanox1972:
I also wonder if has sense to go from U to U1 firmware, I don't know would this be better in my case...

Thanks
[Samsung Galaxy S22 Ultra] Ankeshsharma:
First You have Seen that What Connection type you are using while comnecting on samfw it Should be in "Com Port" not "MTP" try vice Versa and it will be Done.
[Samsung Galaxy S22 Ultra] Boots51:
Hi there

Has anyone tried this on an S21 5G?

Cheers GH
[Samsung Galaxy S22 Ultra] a.rahimizadeh:
Hi there,

I have Enabled all 5G and LTE bands. I have a problem.

I can't connect to 5G SA band 78 with custom PLMN ID. the PLMN ID I am trying to connect is 43245. is there any way to bypass that and connect to this PLMN??
[Samsung Galaxy S22 Ultra] Ankeshsharma:
Which Model S22U??
[Samsung Galaxy S22 Ultra] a.rahimizadeh:
S22
[Samsung Galaxy S22 Ultra] habiodunz:
i have a s22U US variant, my network provider uses N78 band for 5G, i unlocked the band[i guess] using GCF method, but my s22u still doesnt connect to it, while my iphone 12pm does get 5G signal
[Samsung Galaxy S22 Ultra] a.rahimizadeh:
witch plmn are you trying to connect?
[Samsung Galaxy S22 Ultra] Ankeshsharma:
@Romeo Nickolas i Just searched that S20U G988U does have a 5g Antenna IC Which is QPM5677 PAM Which i not in the Mother Board Which Supports N77& N78 Bands.
[Samsung Galaxy S22 Ultra] habiodunz:
no idea tbh, any way to find out?
[Samsung Galaxy S22 Ultra] Ankeshsharma:
@Romeo Nickolas can we flash 9880 on 988U1 both are snapdragon.
[Samsung Galaxy S22 Ultra] Romeo Nickolas:
You can't. You can only flash U and W firmware and vice versa on U1 devices.
[Samsung Galaxy S22 Ultra] Leon Micheli:
I have unlocked all of the bandwidths, tried various configurations, but my download speeds are still miserable using 5G vodafone (2-10 mbps on my US unlocked S22 ultra 908U1, compared to 75+ mbps on everyone else's phones) in Germany.

The download speeds most of the time are between 1-5 mbps, and only sometimes extremely rarely are at 30-40 mbps, which are achieved both on LTE+ and 5G. I have tested other S23 ultra, Iphone 14, and their download speeds at the same locations exceed 100 mbps, never going below 50 mbps.

Any advice would be helpful... thanks!

View attachment 5997979
[Samsung Galaxy S22 Ultra] Romeo Nickolas:
Know your carrier 5G band and lock it one by one then speedtest if what is the best. Just uncheck other 5G bands on the band selection menu except the band you want to check the speed.
[Samsung Galaxy S22 Ultra] Leon Micheli:
Thanks for the reply!

Unlocking the exact same frequencies/bands (or some other combination) does sometimes help the coverage, however the speeds are still miserably low, haven't experienced anything above 50 mbps. The phone worked in the US as expected, don't really know why is it so allergic to the German 5G
[Samsung Galaxy S22 Ultra] ducnc1201:
I tried it on my S21 5G G991U, but I have all of my carrier bands unlocked already, so no need to unlock bands there.

I just need to find a way to enable carrier aggregation, but every time I do disable CA combo check, it goes into a cycle of LTE+ and LTE, VoLTE and the Internet connection stops working altogether.
[Samsung Galaxy S22 Ultra] ivanox1972:
I done it easily with this superb manual. Unlocked Tmobile phone, now on U1, using in Europe.

Lte+ appears also after last step in manual. 5g no in Serbia yet ...

But how to verify if I reached really all bands?

I have also vivo x note and getting better 4g and also wifi results on speed test...
[Samsung Galaxy S22 Ultra] dj24:
Can anyone confirm this will work on an unlocked U1 S23 Ultra from the online Samsung U.S store? I'm expecting mine to arrive in a few days..
[Samsung Galaxy S22 Ultra] Romeo Nickolas:
You're on the wrong thread

https://xdaforums.com/t/4554611/
[Samsung Galaxy S22 Ultra] dj24:
Thanks. I still have my S22 Ultra for another week until I send it back and will in the mean time start looking at the S23 ultra forum and namely the thread that you so kindly linked..
[Samsung Galaxy S22 Ultra] Romeo Nickolas:
September 2023 security update blocked the access of diagnostic mode (DM) on QPST tool.

QPST tool is also a way to remove CA combo file to allow more CA to work using EFS explorer.

IDK if it's just my PC but I tried to reinstall but the right port no longer shows. Test it on Note8 and it works.

Can someone test it?
[Samsung Galaxy S22 Ultra] Romeo Nickolas:
I'm on one ui 6 beta 1 now and the code still works without doing the steps again.

View attachment 6009441
[Samsung Galaxy S22 Ultra] jcsww:
It still works on beta 4 as well.
[Samsung Galaxy S22 Ultra] Romeo Nickolas:
I think you're on the wrong thread. This is for S22 not S23.