[Miscellaneous Android Development] mexamilian:
if u are able to get into adb and fastboot then u dont need the VCOM drivers.

On device use "Revoke USB debugging authorizations" in "Developer Options"

then reconnect to phone to cable then pc

@JeffJK

Would you do me a favor, my current connected device sn is 123456789ABCDEF.

I messed up with flashing some roms and wiped the nvnand partition without making a backup of official stock one( didnt know about nvnand till issues started happening), been working on fixing S/N and device connected via adb to stock, currently have tee key and google key in red as overlay, i know ways of getting rid of it but id rather have the original back.

need some structural info, you can replace last 5 number from your serial with XXXXX if u want. i have some files i managed to scrape up digging around on how tos, just clueless on how to get tee key/google key and serial back onto device with proper format.

go into your phones setting>system>advanced>About phone. Post what what you see in the following:

*SIM Status (sim slot 1) klik on in and scroll down to EID (mine says unknown) and post (hide last 4 or so numbers but include full length) i will need to know what to look for when flashing mine back to my phones original status

*Model & Hardware klik on it my says for Model: BV9100 Serial number says 0123456789ABCDEF (again hide last 4 or 5 so i have an idea of what i need to look for in my files)

*WI-Fi MAC address and Bluetooth address all i need from this is do they match or are different, also post last 2 digits/bits in wifi and bt addresses ( i need this for to figure if multicast)

I REALLY RECOMMEND you write this info down before messing with roms and flashing or ull end up like me with blank IMEI (managed to flash fix it), serial of 123456789ABCEDF(still cant fix), and a permanent tee key google key in red(still cant perma fix, have to always remove factorymode). you can watch tutorials on how to use "Mtk Droid Tool to backup your nvnand IMEI serial, make a scatter file on updated OTA latest update of stock BV9100 rom (its really well optimized after trying Lineage unofficial 17.1, HavokOS 3.12 (I have files and sources)

I do not know where the official source for MTK DROID TOOLS is (the latest version i have found is Mtk_Droid_Tool_v2.5.3B some say 2.5.3 I have both if needed source to https://forum.hovatek.com/thread-15665.html) (bitdefender total security says clean on my pc before i installed, it does run sluggish on 10850k with 128gigs ram on nvme) I do recommend u scan with your AV and upload it also to https://www.virustotal.com/gui/ and any other files you get just do be safe

Heres a little write up on how to do so as i cannot cause my phone doesnt have proper setup on stock after a mess up

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Requirement : Your Google android device should be rooted.(Officially provided with source if u need, DONT root it via the mtk droid tools, there is an option. Go with magisk official https://github.com/topjohnwu/Magisk/releases/tag/v21.2 After you have TWRP installed from this thread, download the 21.2 magisk zip file and install inside twrp reboot and configure it)

Download and open MTK droid tools application.

Enable USB debugging mode on your device. Settings > Developer Option > Click USB debugging mode.

SKIP THIS UNLESS YOU HAVE ISSUES(let me know)Then connect your android smartphone to the computer. Your device will detect by MTK droid tools within few minutes. If your mobile phone is not detected, then you have to install USB drivers on your device first. Right click on the “InstallDriver.exe” and select “Run As Administrator” and then restart your computer to install USB driver.

Click IMEI/NVRAM to backup android IMEI and then click backup. Your android backup will be stored in BackupNVRAM folder.

Continue to the backup system, firmware, data and etc (Android ROM) select on Root, backup, recovery tab and backup tab. The process will finish within few minutes.

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