I've not played around with phone firmware for a while. Tomorrow my G6 arrives from Three, but I'll be using a BT SIM in it.
If possible I'd quite like to unlock the bootloader and install firmware that is from the international H870 to get rid of the bloatware and Three splash screen.
If I do this will it receive OTA updates or will it be an issue?
Should be fine, just flash the Open EU .kdz after doing a hard reset (buttons not from settings) and all your bloatware will be gone. Do a backup as you'll lose everything except sd card content.
Sent from my LG-H870 using Tapatalk
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After trying to install few custom ROMS namely DR. Ketans and SimplRom I experience SIM removed error problem.
The flashing goes fine with full factory reset (only internal SD is not wiped), I enter the PIN when I'm asked for it. The SIM is unlock but when the phone registers on the network it gives SIM removed error and forces a reboot.
I also upgraded the bootloader and the modem to the latest versions BL_N910FXXU1BOD2 and CP_N910FXXU1BOC4 but the problem remains the same.
When I restore back to the original ROM (backed up by TWRP) everything works fine. If dirty flash custom ROM over it again there are no problems with the SIM card.
The only conclusion is that T-Mobile has some additional software installed.
The phone is SM-N910F bought from T-Mobile. It has T-Mobile branding on boot and shutdown.
Does anyone now anything about this ?
To update it with my own research.
Apparently the SIM card is lock to Macedonia region. MBM CSC. When installing custom ROM the CSC gets changed and the phone rejects the SIM.
In an effort to resolve this I've flashed DE DBT CSC ROM and the phone won't accept my SIM card.
Currently I'm downloading the original T-Mobile MKD firmware and I hope by restoring it that I will be able to use the phone again.
Also since I paid for the phone in full I intend to contact T-Mobile tomorrow and ask them to unlock my phone.
Will write what comes out of this. Don't want someone else to lose their nerves as I did today
Definitely the issue was in wrong CSC. I've downloaded the original firmware and everything worked again.
But I couldn't stay put and wanted to flash a custom ROM so I went with http://forum.xda-developers.com/note-4/snapdragon-dev/rom-bob4-devbase-multi-csc-safe-bloat-t3033881.
It's a great base ROM stripped of Knox and de-bloated. Most importantly it keeps your current CSC intact.
The procedure was:
Flash original firmware with Odin,
Root with CF-Auto root
Flash TWRP recovery with Odin
Reset data so that it completely goes stock because flashing the original firmware doesn't reset data
At this point I made full nandroid backup
Flash ALEXAND ROM
Uninstall additional bloatware
So far it's working fine.
I hope that this will help someone.
Hello..I bought A2017 and asked the selller to upgrade my phone before he send me the phone..so i received A2017U b19 with nougat 7.1.1 , then I got the problem as any sim card doesn't work, it says no service
Please help me what happened to my phone and what should i do? Thanks in advance
flash a2017 full firmwware, or flash only modem, for the last you need an unlocked bootloader and twrp...
the easier is to flash a full a2017 firmware, get phone working, then mod anything you want
Could you tell me all the steps? I never do those things before.
Are you on Verizon? If so, the solution is put a GSM (for example, T-Mobile or AT&T) sim card in your phone, restart it, then put your Verizon sim back in and restart again. You can get GSM sim for cheap on Amazon.
If this is your problem, you don't need to unlock your bootloader or flash anything.
So like the title says, I'm having an odd issue.
I had previously rebranded my device to ba VKY-L29C432 to upgrade to Oreo. All was well, but finally there was an official Oreo build available for my device variant, VKY-L09C654. I went ahead and restored my oeminfo partition, and installed, but I am now showing Dual SIM options.
I went ahead, and completely deleted all partitions except the oeminfo, and downgraded back to Nougat on my carrier's stock ROM, then upgraded to Oreo on my carrier's stock ROM as well.
However, I'm still seeing dual SIM options. Is there any way to correct this?
Hello XDA,
I recently purchased a H910 from EBAY.
I was able to install Oreo and root it using the excellent tutorials before I was able to have a working sim card on hand so I cannot confirm if this phone was good or bad as I received it. I am using an activated ATT sim card and have used it in another phone with calls, texts, and data working. I have not for the life of me been able to get the any of these features to work on the H910. I have checked the APN settings, I have confirmed both the IMEI number and the sim ID number with ATT. The H910 is able to see the sim card but no mobile network is connected. I can use wifi calling and texting.
I did make a backup/dump of the phone and have flashed the modems, fsg, and misc images with no effect.
I have tried to restore to a stock image of 10q and 20G with the results ending in boot loops so I have not been able to test the stock firmware.
Is there any way to test for a hardware fault?
I would like to avoid returning this phone for something that could be fixed on my end.
Any advice would be greatly appreciated.
MDM3D said:
Hello XDA,
I recently purchased a H910 from EBAY.
I was able to install Oreo and root it using the excellent tutorials before I was able to have a working sim card on hand so I cannot confirm if this phone was good or bad as I received it. I am using an activated ATT sim card and have used it in another phone with calls, texts, and data working. I have not for the life of me been able to get the any of these features to work on the H910. I have checked the APN settings, I have confirmed both the IMEI number and the sim ID number with ATT. The H910 is able to see the sim card but no mobile network is connected. I can use wifi calling and texting.
Click to expand...
Click to collapse
What APN are you using ?
I did make a backup/dump of the phone and have flashed the modems, fsg, and misc images with no effect.
Click to expand...
Click to collapse
This sounds like a hardware failure
I have tried to restore to a stock image of 10q and 20G with the results ending in boot loops so I have not been able to test the stock firmware.
Click to expand...
Click to collapse
are you sure the roms are flashing correctly ? no errors in TWRP ?
I have restored many times with those 2 files and never had a bootloop, flash the 10q or 20G rom then format data before you reboot
Is there any way to test for a hardware fault?
I would like to avoid returning this phone for something that could be fixed on my end.
Any advice would be greatly appreciated.
Click to expand...
Click to collapse
Ive had nothing but great luck getting phones off ebay, but it really sounds like you may have gotten a lemon.
The H910v20 is one of the easiest phones to root and return to stock the 20G rom should work and immediately ask to update to 20H with a AT&T sim in it.
taking the 20G to 20H update will insure you have all the correct modem files and APN.
clsA said:
What APN are you using ?
This sounds like a hardware failure
are you sure the roms are flashing correctly ? no errors in TWRP ?
I have restored many times with those 2 files and never had a bootloop, flash the 10q or 20G rom then format data before you reboot
Ive had nothing but great luck getting phones off ebay, but it really sounds like you may have gotten a lemon.
The H910v20 is one of the easiest phones to root and return to stock the 20G rom should work and immediately ask to update to 20H with a AT&T sim in it.
taking the 20G to 20H update will insure you have all the correct modem files and APN.
Click to expand...
Click to collapse
clsA, Thank you for taking the time to reply, and for your excellent tutorials.
I tried both the stock(default) APN and manually entering the nxtgenphone APN info I was prompted by ATT but no change. Searches for a signal for about 30 seconds and the throws an x over the signal bars. The phone does detect the sim card and shows my phone number.
I do think it is hardware failure. All of the modem problems I have read have an error saying that the radio is off. I do not get this I get a message stating out of service. I also copied the Modem files from another stock H910 20H from a friend and that did not change anything. Their phone also shows signal bars even when the sim card is removed.
I checked the MD5 Hashes and they are correct on the SD card I was using. I saw no errors in TWRP and I tried 3 different flashing combos with both 10q and 20H. The first was to format device and then advance wipe system, cache, and dalvik, then flash, followed by format device. I then tried just format before and format after flashing, and then not formatting before and only formatting after and got the same boot loops with the 3 combos depending on whether I was using 10q or 20g. ie 2 different boot loops with the different zips. Once the boot loop started I could get to the stock recovery to "erase" the phone but that had no change. The only way I found to stop the loops was to flash the 996.kdz file using lgup and start over. The 20H file works perfectly. as does the 10R. It is really odd.
So I recently picked up the T-Mobile version of the OnePlus 6T (A6013) from Amazon that was refurbished by Amazon. Based on the reviews, I expected that I would have to unlock the sim with T-Mobile before I could even use it. Now that I received the phone, upon booting, there was no T-Mobile animation, and I was able to pop both my AT&T sim and my (work) Verizon sim, both totally work to my pleasant surprise. Now that I'm digging into the unlock/root process, I'm a bit unsure if my bootloader is still locked and I need to take my phone from the T-Mobile rom to the international rom, or if I potentially can go straight into installing TWRP recovery and flash new ROMs.
Additionally, if I do go to the international rom, will I still be able to use my Verizon sim? That's not as important, but definitely a nice touch since it's for work, and I'd like to not have to carry around 2 phones anymore.
Any and all help would be much appreciated!! Thanks in advanced!
UPDATE:
So I went ahead and tried the update process to take my phone to 10.0, but every time I update it, even when attempting through OOS' local update function, when I try booting the phone, it gives me an error along the lines of "FW version does not match SW version" - does anybody know what's up with this? Can't seem to do anything else and have had to restore it multiple times with MSM Tool. Will going through the 7-day unlock process help rectify this?