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Android N radio bootloader

If I fastboot the new Android N radio and bootloader to run Android N on my phone, if I were to flash back an old Marshmallow nandroid while keeping the new radio and bootloader, will I have any issues ?

mikeprius said:
If I fastboot the new Android N radio and bootloader to run Android N on my phone, if I were to flash back an old Marshmallow nandroid while keeping the new radio and bootloader, will I have any issues ?
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No

No you'll be fine. I personally downloaded the latest factory image (NBD90Z) and fastboot flashed the radio/bootloader and I'm still on M. I've tested against Dirty Unicorns 10.6 and RR 5.7.4 and everything has worked great including VoLTE.

Fingerprint not detecting in custom os since installed official 8.1

Fingerprint not detecting since I have installed custom ROM after I have installed official Oreo
On official Oreo fingerprint shows up in settings but in custom Oreo all works fine and best but fingerprint doesn't show up in any settings I have tried 4 8.1 custom roms like sex pixelexpirience 64 bit versions all works flawlessly tested Google camera it works the best but not detecting fingerprint even after searching fingerprint it only shows up gestures's fingerprint in gestures's system menu PLZZ give me link of official Oreo build OPSS28.65-36-3 with Indian band so I could try to flash via fastboot and then recheck if custom roms fingerprint gets detected or not..

Update ur bootloader to Oreo one and then try flashing the rom

Surya Guduru said:
Update ur bootloader to Oreo one and then try flashing the rom
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I don't have fastboot official oreo link can anyone give me plzz

hondraopranav said:
I don't have fastboot official oreo link can anyone give me plzz
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U told u had the official 8.1 ROM ....in that ...... fastboot Flash bootloader bootloader.zip and fastboot flash modem non-hlos.bin

change the base of your fp to nougat base again

Hey check this out

Surya Guduru said:
U told u had the official 8.1 ROM ....in that ...... fastboot Flash bootloader bootloader.zip and fastboot flash modem non-hlos.bin
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The OP didn't say they had the official 8.1 ROM, they said they had installed official Oreo. AFAIK There is no official 8.1 ROM for Sanders. Some people have taken the OTA for their device and repackaged it into an UNofficial flashable package, but that's not the same thing, and reportedly may be causing problems on EU & US variants, so I wouldn't recommend it.
I have the same problem with my FP reader.
I don't have an official 8.1 ROM (because there isn't one, lol), but I installed stock nougat 7.1.1 (retus, in my case) and then got the OTA upgrade to 8.1, after that fp+VoLTE are 100% working.
Then, as soon as I change to a custom 8.1 (or 9) ROM, VoLTE still works, but the fp is no longer recognized by the system.
If I flash back to stock nougat, FP comes back (and LTE breaks, but can be fixed by installing the 8.1 OTA upgrade again, or by getting to a root terminal and fixing permissions on /persist, I've personally verified both methods to restore functionality (assuming your /persist is unmolested - if it is, you're SoL).
Going from fully working official nougat or official Oreo, to any Oreo (or Pie) custom ROM still seems to break the FP reader again. I'm getting really tired of wiping my device...
Not A Solution #1
As suggested here: With FP + VoLTE working under official 8.1 OTA update, I installed TWRP & backed up /EFS, then installed my custom 8.1 ROM (Validus final) and restored the backed up /EFS, but instead of bringing my FP back, it just caused bootloop and I had to roll back to stock and start over. I skipped rolling back to Nougat before flashing custom, is that important? Why would it matter?
Not A Solution #2
After installing the custom 8.1 ROM I tried flashing the Nougat FP base. It had no effect.
Maybe A Solution? UPDATE: YES. A SOLUTION.
As suggested in this post:
1 - download the latest nougat stock rom (link removed - the correct one will vary depending on your device, up to you to obtain the correct firmware);
2 - unzip the above file and cd into the resulting directory;
3 - reboot your phone in fastboot mode;
4 - from terminal (linux or windows, in linux I had to do it as root user, using sudo), type:
fastboot flash bootloader bootloader.img <enter>
fastboot flash modem NON-HLOS.bin <enter>
fastboot reboot <enter>
By doing above steps, your phone should get fingerprint options back.
I did this, it worked, with one additional step - I had a pattern set before. After the fingerprint reader was 'reinstated' the pattern no longer worked. Rebooting into Recovery and flashing lockfix.zip removed the security so that I could set it up again properly. Find lockfix.zip in this post.

Mi 8SE - No cellular data

Hi,
I was trying to install GSI on my Mi 8SE but had no luck with that, so I decided to go back to MIUI. I download MUI 10 V10.2.2.0 and flashed it viac TWRP 1227. The first problem is that the recovery was erased, but I don't need recovery right now (in case I need it, I can flash it via fastboot). But the main problem is that the cellular data are not working. I'm studying abroad so first I allowed international data roaming. With my current cellular provider I have always to create APN which I've done, but cellular data are not working so far. How can I fix it ? I tried everything including erasing data several times.... Can be a problem that I was trying to install GSI ? I tried few GSI and also flash this Vendor (https://forum.xda-developers.com/mi-8-se/development/vendor-vendor-treble-roms-t3877202) but I think if I erased data there cannot be a problem. Can you guys please help me ?

rooted_SK said:
Hi,
I was trying to install GSI on my Mi 8SE but had no luck with that, so I decided to go back to MIUI. I download MUI 10 V10.2.2.0 and flashed it viac TWRP 1227. The first problem is that the recovery was erased, but I don't need recovery right now (in case I need it, I can flash it via fastboot). But the main problem is that the cellular data are not working. I'm studying abroad so first I allowed international data roaming. With my current cellular provider I have always to create APN which I've done, but cellular data are not working so far. How can I fix it ? I tried everything including erasing data several times.... Can be a problem that I was trying to install GSI ? I tried few GSI and also flash this Vendor (https://forum.xda-developers.com/mi-8-se/development/vendor-vendor-treble-roms-t3877202) but I think if I erased data there cannot be a problem. Can you guys please help me ?
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You should download latest rom(mi flash version) from xiaomi's website. Then flash it with mi flash from your computer. Phone should be in fastboot mode and make sure pc recognizes the phone :good:

Will it lock my bootloader ? I have Mi8 SE from China and it came with unlocked bootloader. Do I have to flash Chinese ROM ?

EDIT:
I'm trying now to flash fastboot ROM viac Mi Flash Tool, but I'm getting error: "Flash crclist error". I have selected option clean all at the bottom
EDIT2:
If I flash ROM via TWRP running on Android 8.1, the cellular data works. But If I flash ROM running on Android 9 (no matter if it is stable or weekly build), the cellular data does not work.
EDIT3:
I flashed first weekly MIUI based on Android 9 and then updated to MIUI latest stable and cellular data are working now ! Pretty weird tho

rooted_SK said:
Will it lock my bootloader ? I have Mi8 SE from China and it came with unlocked bootloader. Do I have to flash Chinese ROM ?
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You have to flash chinese rom right. It won't lock your bootloader. After flashing process, flash twrp and xiaomi.eu rom.
Edit: I am happy to see that you solved the problem.

I have a same problem like a video pls help me too
https://youtu.be/JU82PIdGbSU

rudeboytr said:
I have a same problem like a video pls help me too
https://youtu.be/JU82PIdGbSU
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Do you have a same problem problem like I had ?

yes I have a same problem with u

Getting issues on all custom roms

Hi previously i have tried all the roms and all were working properly without any issues then i switched to Stock miui again (Indian Firmware flashed via MiFlash Tool)
then again i flashed twrp and now trying to install custom roms but all roms having the same issue
i.e. - wifi doesn't turns on, Flashlight doesn't work and camera doesn't work.
P.S. - i have india varient device and i always installl 10.3.16 firmware before flashing roms and also i have formatted data (internal storage)
Edit:- everything fixed after i installed miui eu (10.3.16 )
And then flashed roms now everything is fine

pritish sahoo said:
Hi previously i have tried all the roms and all were working properly without any issues then i switched to Stock miui again (Indian Firmware flashed via MiFlash Tool)
then again i flashed twrp and now trying to install custom roms but all roms having the same issue
i.e. - wifi doesn't turns on, Flashlight doesn't work and camera doesn't work.
P.S. - i have india varient device and i always installl 10.3.16 firmware before flashing roms and also i have formatted data (internal storage)
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Try extracting the persist.img file from the latest fastboot ROM, then flash this to the persist partition in TWRP. You'll need a TWRP that can access the persist partition, regular TWRP doesn't allow access to it. LR.Team TWRP should be OK.

Did you try using Android 10 beta? Many people had issues when returning from beta.
Try installing MIUI 10.3.16.0 CN using MiFlash first? Many custom ROMs are based on lastest CN MIUI and using it firmware.

Casting not working on AOSP based roms on Indian K20 pro

Whatever I do,I couldn't cast my phone to my TV.I have tried many roms.But no matter what I do,casting doesn't work.My setup-
* TWRP 3.2.1.2.2 by Mauranfrio
*Vendor and Firmware from Indian 11.0.4
My steps-
1-Flash rom via fastboot
2-Flash recovery
3-Flash DFE
4-Reboot and clean flash any AOSP based rom
I have done everything. Even flashed latest fastboot rom for India,set everything up from scratch.Casting works on stock MIUI but not on any custom rom...with or without magisk,gapps.It just doesn't work.My TV shows in the device list,tries to connect but the connection resets
The option in quick settings is greyed out.
Anyone on Indian firmware and vendor has this problem?