i want to change network band. but binary ver is U3. & previous Android/patch versions is U2. how to flash. samsung has been disabled network band in latest security update.
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Operator failed to register with CDMA network. He managed to make phone seeing the network but at Emergency Mode only (red cross in the status bar when no GSM SIM-card inserted. He failed to enter network parametres by codes and worked through PC. According to info phone used to work with US Cellular after Verizon.
Phone is rooted, CWM installed and appears upon reboot.
Firmware 5.7.894.ХТ862.Verizon.en.US
Baseband n_16.18.16c
Kernel 2.6.35.7-g790a33c [email protected]#1
Build 5.5.1_84_D3G-64
GSM works properly
What if I roll back to the latest official firmware? Could it help to register within CDMA network (Dalacom - Kazakhstan)?
The unlocked version doesn't support wifi calling and band 12. Are there any guides on how to flash the T-Mobile stock rom?
I am trying to flash ATT's firmware to a U1 or U phone but CSC does not change. In software details I see XAA/XAA/XAC while I should be seeing ATT/ATT/XAC. I am on CSL1 firmware (android 10).
Did samsung change something in Android 10? I have done that in S8/S9/note 9 and I never had problems
prince_72 said:
I am trying to flash ATT's firmware to a U1 or U phone but CSC does not change. In software details I see XAA/XAA/XAC while I should be seeing ATT/ATT/XAC. I am on CSL1 firmware (android 10).
Did samsung change something in Android 10? I have done that in S8/S9/note 9 and I never had problems
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i flashed the XAA U1 on my S9 and its showing AIO(Cricket) in my software from service provider area and it did this as soon as it saw the SIM
Do you have VoLTE and Wifi calling on U1? I am flashing the U from AT&T just because I want the wifi calling and VoLTE. In U firmwares I see that CSC does not change now
I don't get why I can easily get WiFi Calling and VOLTE with the unlocked version using Verizon or TMo but not with AT&T... Very frustrating as their signal is awful inside my home...
I finally switched to Verizon for service but should not have too.
Hope you can make it work!
Sent from my SM-G973U1 using Tapatalk
Hello everyone!
I have a Mi 9 from China, which is running Xiaomi.eu ROM 20.1.21 and is rooted with Magisk 20.3 and I have TWRP 3.3.1-46 as custom recovery.
My device does not have Band 20 unlocked. My carrier uses Band 20 for LTE, so I would like to have this band on my device as well.
My girlfriend has a Mi 9 from the Netherlands (where we live), which does have Band 20, so it should be possible to unlock band 20 on my phone, since the Snapdragon 855 does support this band.
I read somewhere on this forum (here) that the bands are locked somewhere deep in the system and that it is possible to unlock them by changing values in the NVRAM.
There is a very big chance I'm going to need a custom kernel to be able to write to the NVRAM, because apparantly Qualcomm added some anti temper software to prevent unlocking extra bands (and other features).
I also read somewhere (here) that every OTA update from Xiaomi.eu ROMS installs a new original kernel.
With this information, I have the following questions:
- Do I need a custom kernel to edit the NVRAM to unlock band 20?
- If I do need a custom kernel, which one whould you advise?
- If I have a custom kernel, can I still update my Xiaomi.eu ROM through OTA?
- If I can update through OTA, will the changed settings to the NVRAM remain there, or will the newly installed kernel also reset the values (and I will lose Band 20)?
I would really appreciate your help!
Hi everyone, I recently switched from AT&T to Sprint. Wondering if I can flash the Sprint radio to enable the cdma, or should I crossflash the unlocked version/Sprint version from in order to get the full bands compatible. Thanks a lot.....:highfive:
PS my V40 is running latest android 10.
I have a Sprint V405UA, bootloader unlocked via 9008 mode running Havoc OS 3.5. I experience no better than 1X or a single bar of 3G on Havoc OS, but I do have the stock Pie ROM/partitions in slot A (no Sprint Android 10 yet to my knowledge). On stock, service works like a charm with full LTE bands. I'm not too heavily experienced with the partition layout or radios of this phone. If someone were able to tell me where I can dump the radio to for a flashable ZIP, or if there is a system app that Sprint has installed to enable LTE bands and Wi-Fi/VoLTE that I can retrieve with root, I am happy to provide.