Needing to do a CSC change from TMB to XAA. I have a Galaxy 8 plus G955usqs7dsk2 with a provider of TMB/XAA/TMB. Can not find any version 7 bianary files that I am able to download to do a CSC change.
I have a second phone s8 plus with G955usqs5dsf2 and it works fine with provider showing XAA/XAA/USC using the same sim card.
My issue seems that TMB does not like the tower at my house and doesn't connect to it. I can drive away from my house and all other towers work fine. I even changed out all the phone boards all but the cpu board just in case it was hardware related. If there is another way of doing a csc change on this phone let me know.
Related
A little history on how I get to no VoLTE and my question: I'm trying to figure out if there is a way to copy 'some' CSC directory files, or modify a CSC file to enable the VoLTE tab to show and work?
So I have a G930S phone with 8+ Infinity v8 ROM. Phone INFO and CSC Features apps shows phone as G955F, with a CSC code of XAA, USA/US. The phone works just fine on the AT&T service, even without doing a scan of "Service Providers". Interestingly, there is no CSC directory in root/System. There is no VoLTE, as I'd think is consistent with the original phone being G930S (Korean)
I can go into Settings/Connection/Mobile Networks/Network Operators and do a scan of providers and it pulls up AT&T, T-Mobile, etc just fine. That's great.
I think because the base phone is for the China area, when I go into the Settings/Connection/Data Usage area, going into the "Service provider settings", I get three Chinese possible servers, and when I go into "Region", there is a list of Chinese cities. I do lose these Chinese setting tabs when I flash a US based CSC.
I have flashed CSC TMB, ATT and XAA, and the phone works fine on the AT&T service (Cricket) , and a specific System/CSC directory is installed, though I can no longer input any phone 'codes', eg *# whatever. I've tried about 5 methods to get the phone to get working *# codes, nothing so far solves it.
I have tried copying into System a CSC directory for ATT and later TMB or XAA, and my setup will work fine on the AT&T service, and I lose the Chinese regions/cities, as should be appropriate, but I can not input any phone codes, *#...
So I've gone back to the 8+ ROM, where there is no System/CSC directory and I get AT&T service with or without doing a Service provider search, but no VoLTE.
I'm trying to figure out if there is a way to copy 'some' CSC directory files, or modify a CSC file to enable the VoLTE tab to show and work?
Hi,
I have a problem with my Samsung Galaxy S8+ (G955F) model. The phone shows Carrier ID: VOD (I guess means Vodafone/Product Code) in Odin Mode in Red Color, the phone is unlocked working on one carrier in all LTE/3G/2G networks but on other carrier it only works in LTE/3G modes and when i switch it to 2G only it doesn't register to a network on this second carrier and as long as i Turn it Back to LTE/3G/2G it registers but to only LTE or 3G.
I believe it is some kind of a partial carrier lock where the phone is locked on some carriers in different network modes.
Its not registering to 2G on Telenor Pakistan Network while it registers on LTE/3G/2G perfectly fine on Zong CMPak.
The phone doesnt require any kind of carrier unlock code or something.
Is there any way to work this around??? I have installed UK BTU Firmware from Sammobile, already debranded and works perfectly fine just not working in 2G mode on this one carrier.
Is there any way to change this product code or something while being on official Stock Firmware?
My Current Service Provider Version is: PAK/PAK/VOD
I want to change this to PAK/PAK/PAK and remove that Carrier ID: VOD thing from the odin mode display.
Please help!!!!!
hi did you find a solution??
Nopes. I just had to change my phone after all the things I tried, It won't go so I had no other option.
So this is a hack so to speak
as of right now Crcket does not have a bit 7 firmware but thats ok screw them.
So download any Us multi csc firmware you need for what ever bit number your on.
Flash that in latest odin.
Insert your cricket sim,It will reboot to personalize the device for the new carrier I just did this on bit 7 and am running cricket csc on bit 7 despite not even being released...
Next you must put your sim in any cricket wifi calling enabled device. Setup wifi calling on that device. Put in your address and such...
Then replace your sim back into the samsung device and you are good to go
As you can see from my screen shots my device is originally a cct Xfinity Mobile but running aio latest Jan security patches with operational wifi calling
The method outlined below can probably be used on other variants.
My phone started out as an unlocked Tmo S9+ - SM-G965U
Flashing the latest tmo firmware (G965USQS7ETH2) would only yield volte, not wifi calling with cricket. The exact same firmware would give volte and wifi calling withi my free freeup sim (also att based). So the device and firmware is most certainly capable of it, but there's profiles in place restricting it.
As soon as the sim was swapped to the cricket one, phone would reboot, apply csc changes and no wifi calling. Flashing the AIO CSC didn't help either. They purposely block wifi [email protected]#
So, solution is to prevent the CSC change from free up (CSC: ATT) to cricket (AIO) from taking place. But how on an unrooted device???? I decided to use the debloated factory unlocked U1 fw rather than U (less crap to disable later).
My final results is a concoction of fw pieces and some adb magic.
It is important that account/sim is already configured for volte/wifi calling. I did this over chat by providing them an iphone 8 (or 9?) IMEI and confirmed hd voice and wifi calling was enabled on the profile. Some social engineering may be needed.
I use frija to obtain all fw's.
a) Base firmware: SM-G965U1_2_20200709201504_m6wxoyd74w_fac.zip based on G965U1UEU7ETG1
CSC: TMB
Additional:
b) SM-G965U_2_20200811140304_5ohvmlyr5p_fac_G965USQS7ETH2_TMB based on latest G965USQS7ETH2 tmo firmware
CSC: TMB
1) Obtain and extract files from both of the above zips. Keep track of which is which.
2) In odin, specify everything from A except CSC. Use the CSC (home or non-home) from B. This is needed to get the advanced calling features to work. Flashing CSC from A resulted in no wifi calling (possibly no volte either, can't remember).
CSC home or non home version?
I haven't tried this with an already configured phone, will probably work too. In that case use the home version. Non home results in a factory reset.
3) You will need a sim that specifies the ATT CSC. In my case the freeup sim is identified as such in the phone info app. I imagine a deactivated or blank sim should do the trick. The goal here is to get the phone to flash the correct CSC parameters. Have this sim in the phone prior to the reboot from odin.
4) Depending on which csc used in #2, the phone may reboot to apply CSC changes, let it. We want to lock in this profile.
5) If all is right, you should see the wifi calling toggle in the quick tiles and have the options in the connections and phone settings.
6) Enable usb debugging and connect via adb shell
7) This one took forever to determine, but this is what makes it all work!
Code:
adb shell pm disable-user --user 0 com.samsung.android.cidmanager
8) Insert your cricket sim and allow to register. You will see it doesn't ask you to reboot to apply any csc changes. Under the 4636 menu it should show volte and wifi calling enabled. Make sure the wifi calling toggle is enabled
9) Reboot the phone for good measure and test again. Enable airplane mode and wifi. Try placing a call. It should go through.
Caveats: Unlike the att CSC, this one doesn't ask for an address. I'm not sure what address it's using - the one tied to the cricket account? The signal around here is good that wifi calling only kicks in in air plane mode.
Does this break something else? Possibly. Lets hope a proper fw update is released where these shenanigans are not necessary. With root, the proper CSC features can be correctly enabled for the control xml file. The battery in this phone is already at ~80% life remaining, so not willing to give up another 20%.
Good luck!
Reserved
Wifi calling uses the following ports. Make sure they're open in your firewall.
Outbound port 4500 udp
Outbound port 500 udp
Outbound port 5228 tcp
There may be others, but these were the nonstandard ones I had to explicitly define.
do you think you can use the stock U1 firmware ++ the tmo home CSC with this method?
wpcprez said:
do you think you can use the stock U1 firmware ++ the tmo home CSC with this method?
Click to expand...
Click to collapse
Why not... Try it?
gpz1100 said:
Why not... Try it?
Click to expand...
Click to collapse
strange, I used frija to download XAA and TMB firmwares but they end up being the same filename?
also, going to need to find an ATT SIM. Tried my redpocket GSMA but since it was never registered to an account it is giving me an error.
I can assure you this does not work. Your putting your sin in a cricket phone which provisions wifi calling and volte. When you insert t the sun in another phone it works for a mere hours. Then they realize your in a different device and reprovision your account again. Simply fishing cricket firmware does not fix this.
Only way to get around it is like I do.
Put your sim in a cricket phone. Provision. Swap sims. Then call them immediately and tell them your using the cricket device but it's showing your byop still and they need to change the imei to the cricket device. Then they're system will not reprovision your account again. Wifi calling will continue to work indefinitely
TheMadScientist said:
I can assure you this does not work. Your putting your sin in a cricket phone which provisions wifi calling and volte. When you insert t the sun in another phone it works for a mere hours. Then they realize your in a different device and reprovision your account again. Simply fishing cricket firmware does not fix this.
Only way to get around it is like I do.
Put your sim in a cricket phone. Provision. Swap sims. Then call them immediately and tell them your using the cricket device but it's showing your byop still and they need to change the imei to the cricket device. Then they're system will not reprovision your account again. Wifi calling will continue to work indefinitely
Click to expand...
Click to collapse
To whom are you replying? My cricket account already has a hardcoded imei on it (via customer service).
ok so not worth the trouble trying to get an ATT sim then? One thing that does work is VOLTE started working after pulling sim, putting in iphone6 enable wifi calling / volte. Swap back then volte started working and continues to work.
Forgive me if this has been covered but I havn't found the answer. I've flashed just about every phone I've ever had but my question here is can I / how do I flash to where the phone reads as XAA in download Mode?
The situation is my phone was originally on at&t. They unlocked it and I'm on Verizon. It all works great (it still says at&t on download Mode screen)
My problem is that if I log into the my Verizon app it disables my visual voicemail. I finally got a Verizon tech on the phone that explained that it is unsupported due to originally being on a different carrier and their system identifies that and disables the VVM. The only fix I can find is to put my sim in my backup S9+ that came from Samsung unlocked (or any Verizon phone) and I can then reactivate my VVM by resubscribing.
I currently have 3 Note 20 Ultras. One Each originally from Samsung, ATT and Verizon but the AT&T is the only one that is 512GB or I would just switch phones. I have flashed them all to U1 firmware but notice they all still reflect the original carrier in Download Mode so again my question is can I change this by flashing it / or is it just a matter of what sim card is in it when it's flashed? I need it to be seen as XAA by Verizon system so not to loose VVM... Pics attached.
Any advice here is greatly appreciated in advance.
Just a try... You can try the *#272*imei# method... But thats If it works. Not sure if the sims has to be in the phone for that to work.
GDHAMTON7 said:
Just a try... You can try the *#272*imei# method... But thats If it works. Not sure if the sims has to be in the phone for that to work.
Click to expand...
Click to collapse
Yes it brings up this menu... So I just select the XAA and that's it? I've been reading forums and this method is reversible it seems ... I'm familiar with Odin and all that but these hidden menus are new to me...
Thanks for the reply btw
You may have to activate the bottom most option to stay.
Don't worry if you can't access the menu after the change. You can download samsung band selection and change to automatic or one of the lte options then back to automatic to get to the menu.
CSC Guide
CSC (which I think means Carrier Service Code) helps to set what options for settings show in the device for things like voicemail and wifi calling, as well as sets network code information for things like carrier aggregation combos.
When you go to your phone settings->about phone->software information and look in the Service Provider SW ver. section, you will see as the last line a combo like XXX/YYY/ZZZ. This indicates what carrier sales and network code is set and what brand the phone was manufactured as.
I think of the XXX/YYY/ZZZ configuration as follows
XXX=Sales Code-What kind of features are setup in the firmware like wifi calling, video calling and settings menus
YYY=Network Code-What kind of network features are set for things like carrier aggregation and LTE/5G bands
ZZZ=Manufactured as Code- What model the phone was originally manufactured as. Ot has no affect on the system settings or options. THIS CAN NOT CHANGE. IT SHOULD ALWAYS BE THE SAME. ONLY A ROOTED PHONE WOULD BE ABLE TO ACCESS THE FILES NECESSARY TO CHANGE THIS.
for more details, refer to post:-
[Guide] Service Mode and CSC Guide/Enable LTE/5G Bands and Services/5G Low Band on U1
Hello All, Many people have asked about service mode and CSC related questions and I thought we should get a discussion going that is all in one place. *DISCLAIMER* I do not take any responsibility for any issues that may occur from changing...
forum.xda-developers.com