I have a Galaxy S2 GT-I9100G (bought in China 2 years ago).
In the past I have changed it's rom to SuperROM#v1.1 found here : http://forum.xda-developers.com/showthread.php?t=1374135.
The current Android version is 2.3.6 (oldddd )
Kernel version is : 2.6.35.7
Baseband version : I9100GZCKI1
I also have CWM-based Recovery v5.0.2.6 for GS2.
I would really like to upgrade to JellyBean.
I have seen a couple of versions here:
* http://www.ibtimes.co.uk/articles/4...100g-android422-jellybean-aokp-mr1-build6.htm
* http://www.ibtimes.co.uk/articles/4...-android422-jellybean-vanilla-rootbox-rom.htm
* http://www.ibtimes.co.uk/articles/4...droid422-jellybean-update-slimbean-build5.htm
and of course all the ROMs here on the site (too much to choose from !)
My question is : can my *Chinese* device be upgraded to JellyBean ?
If so - I have read on some forum threads that I need to somehow get the stock roms first, but I have no idea where to get them for the Chinese device.
Any help would be very much appreciated...
S2User said:
I have a Galaxy S2 GT-I9100G (bought in China 2 years ago).
In the past I have changed it's rom to SuperROM#v1.1 found here : http://forum.xda-developers.com/showthread.php?t=1374135.
The current Android version is 2.3.6 (oldddd )
Kernel version is : 2.6.35.7
Baseband version : I9100GZCKI1
I also have CWM-based Recovery v5.0.2.6 for GS2.
I would really like to upgrade to JellyBean.
I have seen a couple of versions here:
* http://www.ibtimes.co.uk/articles/4...100g-android422-jellybean-aokp-mr1-build6.htm
* http://www.ibtimes.co.uk/articles/4...-android422-jellybean-vanilla-rootbox-rom.htm
* http://www.ibtimes.co.uk/articles/4...droid422-jellybean-update-slimbean-build5.htm
and of course all the ROMs here on the site (too much to choose from !)
My question is : can my *Chinese* device be upgraded to JellyBean ?
If so - I have read on some forum threads that I need to somehow get the stock roms first, but I have no idea where to get them for the Chinese device.
Any help would be very much appreciated...
Click to expand...
Click to collapse
officially yes, unofficially(none samsung) yes
official:
take a look at this: http://forum.xda-developers.com/showthread.php?t=2171269 (thanks to hacbaoklhh for posting this thread)
unofficial (none samsung)
first you need to do the official thing (so you can get the ics/jb boatloader in), if you wish to stick with the official then you're done, no need to continue.
then you need to do this: http://forum.xda-developers.com/showthread.php?t=2113545 flash via stock recovery (thanks to Ryuinferno for his great work)
then you can flash whatever rom you want (AOSP, AOKP, MIUI)
to revert back to original:
take a look at this: http://forum.xda-developers.com/showthread.php?t=1916623 (thanks to Harchaoui for his hard work) or you can do the official thing again via odin, end of story
but i wouldnt revert back to chinese stock rom, we have the best developers and our 4.2.2 has become so stable
good luck
xtachix said:
officially yes, unofficially(none samsung) yes
official:
take a look at this: http://forum.xda-developers.com/showthread.php?t=2171269 (thanks to hacbaoklhh for posting this thread)
unofficial (none samsung)
first you need to do the official thing (so you can get the ics/jb boatloader in), if you wish to stick with the official then you're done, no need to continue.
then you need to do this: http://forum.xda-developers.com/showthread.php?t=2113545 flash via stock recovery (thanks to Ryuinferno for his great work)
then you can flash whatever rom you want (AOSP, AOKP, MIUI)
to revert back to original:
take a look at this: http://forum.xda-developers.com/showthread.php?t=1916623 (thanks to Harchaoui for his hard work) or you can do the official thing again via odin, end of story
but i wouldnt revert back to chinese stock rom, we have the best developers and our 4.2.2 has become so stable
good luck
Click to expand...
Click to collapse
Wow, that was fast !
Thanks so much for the response.
I have 3 questions if you could answer:
1. In your first link it says "Instructions For Flashing ICS:".
Does it mean that is will flash ICS or that I need to have ICS to flash it ?
because I don't have ICS... I have Gingerbread ...
2. Does the process in both your links change the Kernel or the Rom ?
(I managed to forget all this stuff since I last did this 2 years ago)
3. Which ROM would you recommend to use ? (out of the AOPS, AOKS and MIUI)
Thanks !
S2User said:
Wow, that was fast !
Thanks so much for the response.
I have 3 questions if you could answer:
1. In your first link it says "Instructions For Flashing ICS:".
Does it mean that is will flash ICS or that I need to have ICS to flash it ?
because I don't have ICS... I have Gingerbread ...
2. Does the process in both your links change the Kernel or the Rom ?
(I managed to forget all this stuff since I last did this 2 years ago)
3. Which ROM would you recommend to use ? (out of the AOPS, AOKS and MIUI)
Thanks !
Click to expand...
Click to collapse
1. its ok, that's probably just a typo, the android version there is 4.1.2. should state JB. via odin you can flash that and you will have official JB
flashing via odin doesnt care which version of android you currently have
2. the process of the first link will basically put a whole new kernel and rom in your system. you will have official JB kernel from samsung along with official rom from samsung. your version will be 4.1.2. (this is required to get the ics/jb bootloader which you dont have)
the purpose of the second link is to change the kernel so that it has cwm or twrp recovery integrated in. this will allow you to flash mods and roms and all that. but it is not necisary if you are not willing to use AOSP AOKP MIUI. if you'd like to stick with the official and see how it performs then you don't have to do the second link
3. personally i think the simpler the better, i use CM10.1 (CyanogenMod 10.1) <----- thanks to codworkerx, i also like Thinking Bridge http://forum.xda-developers.com/showthread.php?t=2199527 (thanks to Black_Prince for his great work)
couple any of those roms with http://forum.xda-developers.com/showthread.php?t=2251840 kernel (thanks to biagio7xD) and you will have a super fast rom with no SOD
xtachix said:
1. its ok, that's probably just a typo, the android version there is 4.1.2. should state JB. via odin you can flash that and you will have official JB
flashing via odin doesnt care which version of android you currently have
Click to expand...
Click to collapse
Thanks for the info.
2. the process of the first link will basically put a whole new kernel and rom in your system. you will have official JB kernel from samsung along with official rom from samsung. your version will be 4.1.2. (this is required to get the ics/jb bootloader which you dont have)
the purpose of the second link is to change the kernel so that it has cwm or twrp recovery integrated in. this will allow you to flash mods and roms and all that. but it is not necisary if you are not willing to use AOSP AOKP MIUI. if you'd like to stick with the official and see how it performs then you don't have to do the second link
Click to expand...
Click to collapse
I would like to go with custom ROMs. do I have to do the chapter 'Instructions For Changing CSC' that is in your first link ?
It says that it will wipe my device.
3. personally i think the simpler the better, i use CM10.1 (CyanogenMod 10.1) <----- thanks to codworkerx, i also like Thinking Bridge http://forum.xda-developers.com/showthread.php?t=2199527 (thanks to Black_Prince for his great work)
couple any of those roms with http://forum.xda-developers.com/showthread.php?t=2251840 kernel (thanks to biagio7xD) and you will have a super fast rom with no SOD
Click to expand...
Click to collapse
Thanks for the info. I don't think I will use the simple CM10.1 . I will look for a nice-looking UI rom.
By the way - do all the ROMs work with the Kernel that I will install in step 1 ?
S2User said:
Thanks for the info.
I would like to go with custom ROMs. do I have to do the chapter 'Instructions For Changing CSC' that is in your first link ?
It says that it will wipe my device.
Thanks for the info. I don't think I will use the simple CM10.1 . I will look for a nice-looking UI rom.
By the way - do all the ROMs work with the Kernel that I will install in step 1 ?
Click to expand...
Click to collapse
Dont worry about CSC.
every rom comes with its own kernel, if you're refering to step one as in the official then that's the kernel for official and nothing else
the blazing kernel is also for official and nothing else (or official based roms)
the kernel link i gave you last was for aosp aokp based roms
xtachix said:
Dont worry about CSC.
every rom comes with its own kernel, if you're refering to step one as in the official then that's the kernel for official and nothing else
the blazing kernel is also for official and nothing else (or official based roms)
the kernel link i gave you last was for aosp aokp based roms
Click to expand...
Click to collapse
So I am a bit confused now ...
You say 'don't worry about CSC'.
Does that mean I don't have to install CSC ?
Or that I do have to install it, but not worry about it...
also - I understood from your 1st comment that I have to go through the official kernel & rom, before I can put a custom rom.
Did I get it right ?
Because now from your last comment - I am understanding that if I want a custom rom - I can go ahead and just install it with its own kernel, without having to go through the first step of installing the official rom and kernel.
xtachix said:
officially yes, unofficially(none samsung) yes
unofficial (none samsung)
first you need to do the official thing (so you can get the ics/jb boatloader in), if you wish to stick with the official then you're done, no need to continue.
then you need to do this: http://forum.xda-developers.com/showthread.php?t=2113545 flash via stock recovery (thanks to Ryuinferno for his great work)
then you can flash whatever rom you want (AOSP, AOKP, MIUI)
Click to expand...
Click to collapse
Another question : I looked at this link - isn't CWM6 old ? I thought that the latest version is 10.1
S2User said:
So I am a bit confused now ...
You say 'don't worry about CSC'.
Does that mean I don't have to install CSC ?
Or that I do have to install it, but not worry about it...
also - I understood from your 1st comment that I have to go through the official kernel & rom, before I can put a custom rom.
Did I get it right ?
Because now from your last comment - I am understanding that if I want a custom rom - I can go ahead and just install it with its own kernel, without having to go through the first step of installing the official rom and kernel.
Click to expand...
Click to collapse
dont worry about the csc means really dont worry, every official rom, custom rom, comes with csc. some of them have multiple csc.
S2User said:
Another question : I looked at this link - isn't CWM6 old ? I thought that the latest version is 10.1
Click to expand...
Click to collapse
CWM = clockworkmod (this is the recovery integrated with the kernel. you have a few main types- cwm, twrp, official). this recovery allows you to install roms and such. version 6 is the latest. if i'm not mistaken the version you have for gingerbread would be (if you have cwm) 4 or 5.
cm = cyanogenmod (this is the rom)
they are two different things.
let us go through the basics:
what does a ROM have?
it has a kernel (this allows you to do the basic io stuff, it has cwm or twrp >> if custom, or official recover if official)
it has a bootloader (this allows you to get into a specific version of roms), official roms have the bootloader
it has system files (this is the actual rom base, it has all the modules)
it has basic apps (well, these are the apps, dialer, messaging, etc..)
it has csc
it has baseband and ril
let us elaborate a little bit:
your phone currently has gingerbread bootloader. so it is version 2.0+
to use Icecream sandwich you need the icecream sandwich bootloader. 4.0+
different version means different bootloader
this is where flashing a rom via odin comes in handy. it will install that specific bootloader into your phone
ofcourse along with other things, like the kernel, actual rom, apps. so you will have a full 4.1.2 system.
notice: ics and jb bootloaders are the same, reason is simple, the base version of both is 4, if there they introduce a version 5 android then everyone has to get the newest bootloader for version 5 to use it.
it doesnt matter where the 4.x+ comes from, if it is aosp aokp official miui, the bootloader is REQUIRED to run any of those
now your first step is to install the official rom (this way you ensure that you have the proper bootloader, and at the same time you get the official 4.1.2). now if you want to keep the official then there is nothing else to do, if by any chance you need to change csc then the steps there are simple, but it is not required. look up what is csc
next you need to install a kernel that has either cwm or twrp (this way you prepare yourself to install custom roms)
next you select the rom you would like to install, download it and put it in your sdcard
next you boot into recover (notice it is different from the official one, it has many options)
install the rom from the sdcard location
and in many cases you will have to install gapps (google apps, and do not make a mistake and install the wrong one, every version of android has its own gapps, if you have 4.2.2 install ONLY 4.2.2 gapps)
done!
as i mentioned above, every rom comes with whatever that it comes with. a kernel, csc, blah blah blah.
so basically what happens when you flash the custom rom?
simple, you change the kernel (zImage) it has its own and that's what it needs to run, and official kernel cannot run an aosp rom. period.
you put a whole new framework, system, apps, based on the android version they have been developed in.
next if you want to modify things, you can get into themes, installing another kernel, changing baseband and ril(Radio Interface Layer), and so on.
well i hope this helps
xtachix said:
dont worry about the csc means really dont worry, every official rom, custom rom, comes with csc. some of them have multiple csc.
CWM = clockworkmod (this is the recovery integrated with the kernel. you have a few main types- cwm, twrp, official). this recovery allows you to install roms and such. version 6 is the latest. if i'm not mistaken the version you have for gingerbread would be (if you have cwm) 4 or 5.
cm = cyanogenmod (this is the rom)
they are two different things.
let us go through the basics:
what does a ROM have?
it has a kernel (this allows you to do the basic io stuff, it has cwm or twrp >> if custom, or official recover if official)
it has a bootloader (this allows you to get into a specific version of roms), official roms have the bootloader
it has system files (this is the actual rom base, it has all the modules)
it has basic apps (well, these are the apps, dialer, messaging, etc..)
it has csc
it has baseband and ril
let us elaborate a little bit:
your phone currently has gingerbread bootloader. so it is version 2.0+
to use Icecream sandwich you need the icecream sandwich bootloader. 4.0+
different version means different bootloader
this is where flashing a rom via odin comes in handy. it will install that specific bootloader into your phone
ofcourse along with other things, like the kernel, actual rom, apps. so you will have a full 4.1.2 system.
notice: ics and jb bootloaders are the same, reason is simple, the base version of both is 4, if there they introduce a version 5 android then everyone has to get the newest bootloader for version 5 to use it.
it doesnt matter where the 4.x+ comes from, if it is aosp aokp official miui, the bootloader is REQUIRED to run any of those
now your first step is to install the official rom (this way you ensure that you have the proper bootloader, and at the same time you get the official 4.1.2). now if you want to keep the official then there is nothing else to do, if by any chance you need to change csc then the steps there are simple, but it is not required. look up what is csc
next you need to install a kernel that has either cwm or twrp (this way you prepare yourself to install custom roms)
next you select the rom you would like to install, download it and put it in your sdcard
next you boot into recover (notice it is different from the official one, it has many options)
install the rom from the sdcard location
and in many cases you will have to install gapps (google apps, and do not make a mistake and install the wrong one, every version of android has its own gapps, if you have 4.2.2 install ONLY 4.2.2 gapps)
done!
as i mentioned above, every rom comes with whatever that it comes with. a kernel, csc, blah blah blah.
so basically what happens when you flash the custom rom?
simple, you change the kernel (zImage) it has its own and that's what it needs to run, and official kernel cannot run an aosp rom. period.
you put a whole new framework, system, apps, based on the android version they have been developed in.
next if you want to modify things, you can get into themes, installing another kernel, changing baseband and ril(Radio Interface Layer), and so on.
well i hope this helps
Click to expand...
Click to collapse
Thanks so much for the information !
I've managed to install 10.1 and now have 4.2.2 !
Thanks so much !
S2User said:
Thanks so much for the information !
I've managed to install 10.1 and now have 4.2.2 !
Thanks so much !
Click to expand...
Click to collapse
you're most welcome,
enjoy your newly flashed rom
Hi Devs,
I have tried to unlock bootloader [SD] by Mi Official method but got no success. :crying:
Always stuck at 50%.
I am wondering if the BL is unlocked via an unofficial way then can I flash AOSP based roms right away.
If yes, kindly suggest a way to unlock BL because I came across with so many threads each is somewhat different.
I have changed MIUI roms to try my luck say global -> global beta -> (soft brick) -> china beta.
Got confused, currently I am on China Dev Rom.
My Understanding till now ---
1. Unlock BL
2. FLash TWRP
3. Wipe All
4. Flash CM firmware -> Flash AOSP rom
5. Success...:silly:
Kindly guide if anyone had done this before.
i was having something similar to you.
i wanted to flash cyanogen roms but i didnt waited until i get the unlocker code from xiaomi.
i followed this tutorial
https://forum.xda-developers.com/redmi-note-3/how-to/method-to-flash-twrp-recovery-unlock-t3473294
it makes you flash a dev/beta global miui rom (i suggest you 6.9.29) with a custom recovery (you delete the stock recovery and replace it with a custom one like aika recovery or zcx recovery). then use the app miflash (latest version support windows 32 &64 bit, olders ones only 64 bit) to flash the entire miui rom.
When you finished you will have a miui rom with custom twrp. Then you boot to recovery (dont let the phone boot to system) and twrp will overwrite stock recovery) then you reboot to system and there you go. You will have miui and a fully working custom recovery (there you can flash supersu, cyanogen roms, xposed, and every other zip you want)
BraianV said:
i was having something similar to you.
i wanted to flash cyanogen roms but i didnt waited until i get the unlocker code from xiaomi.
i followed this tutorial
https://forum.xda-developers.com/redmi-note-3/how-to/method-to-flash-twrp-recovery-unlock-t3473294
it makes you flash a dev/beta global miui rom (i suggest you 6.9.29) with a custom recovery (you delete the stock recovery and replace it with a custom one like aika recovery or zcx recovery). then use the app miflash (latest version support windows 32 &64 bit, olders ones only 64 bit) to flash the entire miui rom.
When you finished you will have a miui rom with custom twrp. Then you boot to recovery (dont let the phone boot to system) and twrp will overwrite stock recovery) then you reboot to system and there you go. You will have miui and a fully working custom recovery (there you can flash supersu, cyanogen roms, xposed, and every other zip you want)
Click to expand...
Click to collapse
I have gone through full thread. https://forum.xda-developers.com/redmi-note-3/how-to/method-to-flash-twrp-recovery-unlock-t3473294
For some it works, but no one has widely used it to flash custom kernal or rom. All again stayed on MiUI.
It seems that nobody is quite clear about how this stuff works because members have asked questions like
How would official TWRP boot on locked BL
Working of Custom kernals
Modified BLs
I am planning to flash Unofficial LineageOS 7.1.1 or RR.
kindly confirm If you did this on Kenzo itself with some custom kernal and rom.
anurag86 said:
I have gone through full thread. https://forum.xda-developers.com/redmi-note-3/how-to/method-to-flash-twrp-recovery-unlock-t3473294
For some it works, but no one has widely used it to flash custom kernal or rom. All again stayed on MiUI.
It seems that nobody is quite clear about how this stuff works because members have asked questions like
How would official TWRP boot on locked BL
Working of Custom kernals
Modified BLs
I am planning to flash Unofficial LineageOS 7.1.1 or RR.
kindly confirm If you did this on Kenzo itself with some custom kernal and rom.
Click to expand...
Click to collapse
I did. After i flashed dev 6.9.29 miui rom with zxc twrp i flashed rr 5.8.0 (Android 7.1) with cm14 firmware, gapps and custom kernel (radon 3.5).
Not a single problem. Try it
---------- Post added at 07:54 PM ---------- Previous post was at 07:52 PM ----------
anurag86 said:
I have gone through full thread. https://forum.xda-developers.com/redmi-note-3/how-to/method-to-flash-twrp-recovery-unlock-t3473294
For some it works, but no one has widely used it to flash custom kernal or rom. All again stayed on MiUI.
It seems that nobody is quite clear about how this stuff works because members have asked questions like
How would official TWRP boot on locked BL
Working of Custom kernals
Modified BLs
I am planning to flash Unofficial LineageOS 7.1.1 or RR.
kindly confirm If you did this on Kenzo itself with some custom kernal and rom.
Click to expand...
Click to collapse
I did it with Kate. The only difference is that i change "cm14 firmware" to put Kate módem (original cm14 firmware has kenzo modem).
You are missing drivers on PC thats why you are getting 50% error... Sign in i.mi and locate...install MiFlash on PC 64bit, win7+, if you are on china dev ->turn on usb debbugging-> boot in fastboot mode,use original cable run MiUnlock and unlock, it will work 100%. I have unlocked BL so many times on different computers...and it always worked...if done all right
Denis:) said:
You are missing drivers on PC thats why you are getting 50% error... Sign in i.mi and locate...install MiFlash on PC 64bit, win7+, if you are on china dev ->turn on usb debbugging-> boot in fastboot mode,use original cable run MiUnlock and unlock, it will work 100%. I have unlocked BL so many times on different computers...and it always worked...if done all right
Click to expand...
Click to collapse
Hi Denis, I have installed MIPcSuite. I think it contains all drivers for our device.
Further drivers from MIFlash tool are also present in my PC.
If you have a specific version kindly tell me.
Say ver of - MiFlash , China Dev or Global Dev , MiUnlock.
off course I am using Mi Cable shipped with device.
@BraianV - I have flashed Lineage. Votle Issues. :good:Hitted Thanks for help.
Hey there,
I am a kate user and I wanna get into custom roms on this device. I ve found out that I have to flash the MIUI firmware made for this device specifically once I flash a custom rom. Does extracting the firmware out of MIUI and using it for the custom rom come with any legal problems. If so, are there ROMs for which I dont need to that?
You will need to research the rom you want to install and instructions of what firmware to use is usually given in threads.
As for extracting firmware, others have already done it without legal issues.
[Firmware] Redmi Note 3 Pro [Kenzo/Kate]
^^^ Get the latest firmware (or version required) in flashable zip format from above thread.
I'm using Kenzo.
I unlocked bootloader unofficially
installed latest TWRP
Flashed N Firmware from https://forum.xda-developers.com/red...-kate-t3507789
Tried Flashing RR Oreo, Firehound, Lineage 14.1, Omni 7.1, facing bootloops with all of them.
Although It boots without any problems on Lineage 13.0.
Thanks, Any help is appreciated.
Your firmware link ends in 404 page.
So don't know what firmware your using, there is no such thing as N firmware for the device.
As MIUI never released Nougat rom for the device.
Edit: - A google search showed me out of date CM firmware.
Get official firmware from this thread: -
https://forum.xda-developers.com/redmi-note-3/development/firmware-hmnote3proglobal-t3574361
corkiejp said:
Your firmware link ends in 404 page.
So don't know what firmware your using, there is no such thing as N firmware for the device.
As MIUI never released Nougat rom for the device.
Edit: - A google search showed me out of date CM firmware.
Get official firmware from this thread: -
https://forum.xda-developers.com/redmi-note-3/development/firmware-hmnote3proglobal-t3574361
Click to expand...
Click to collapse
Thanks.
I tried with 8.2.8 and 9.2.4 firmware from your link, but still no luck.
With Oreo rooms after it's done with boot animation, goes straight to TWRP.
Btw this is the N firmware I talked about.
https://www.google.ca/amp/s/forum.x...14-1-aosp-n-firmware-kenzo-kate-t3507789/amp/
sanjayatlive said:
Thanks.
I tried with 8.2.8 and 9.2.4 firmware from your link, but still no luck.
With Oreo rooms after it's done with boot animation, goes straight to TWRP.
Btw this is the N firmware I talked about.
https://www.google.ca/amp/s/forum.x...14-1-aosp-n-firmware-kenzo-kate-t3507789/amp/
Click to expand...
Click to collapse
Did you also use an Oreo Compatible TWRP, check your rom pages for which TWRP and Firmware required.
A flash of latest MIUI Original fastboot rom in EDL mode maybe required to get your device upto date.
Your firmware linked is definitely way out of date version. (12.04.2017).
Is your bootloader unlock officialy, if yes then flash the version with includes emmc_appsboot.mbn
Hi all,
I recently purchased a Poco F1 and am planning a trajectory for flashing a custom ROM and kernel when the limit expires on unlocking. However, I'm having issues following what is the latest firmware, or MIUI version, or Android release for the unit. Let me explain:
This unit came with a MIUI 9 version that promptly got a two-step OTA to MIUI Global 10 10.0.6.0(OEJMIFH). It is running Android Oreo (8.1.0).
However, discussion in custom ROM threads as late as this week refer to MIUI 10 8.13.x builds and betas being the most recent firmware, and advise to use these firmwares that are based on Android Pie as the base for flashing custom ROMs based on Pie. Despite the older MIUI version number, the Android version is newer.
In addition, there are complaints around the touch performance of this device when using 8.12.x or earlier firmwares that I am not experiencing with this 10.0.6.0 firmware, and I don't want to introduce issues in the process of preparing this unit for a custom ROM.
Basically, I'm not sure what my trajectory should be if I wish to use a MIUI beta ROM, or if I wish to flash something like LineageOS while retaining or updating the touchscreen firmware appropriately. Can I simply unlock the bootloader, flash TWRP, then flash a custom ROM as I have done in the past on other devices? Can I update the touch firmware separately?
Any help would be much appreciated, thanks.
Crayphish said:
Hi all,
I recently purchased a Poco F1 and am planning a trajectory for flashing a custom ROM and kernel when the limit expires on unlocking. However, I'm having issues following what is the latest firmware, or MIUI version, or Android release for the unit. Let me explain:
This unit came with a MIUI 9 version that promptly got a two-step OTA to MIUI Global 10 10.0.6.0(OEJMIFH). It is running Android Oreo (8.1.0).
However, discussion in custom ROM threads as late as this week refer to MIUI 10 8.13.x builds and betas being the most recent firmware, and advise to use these firmwares that are based on Android Pie as the base for flashing custom ROMs based on Pie. Despite the older MIUI version number, the Android version is newer.
In addition, there are complaints around the touch performance of this device when using 8.12.x or earlier firmwares that I am not experiencing with this 10.0.6.0 firmware, and I don't want to introduce issues in the process of preparing this unit for a custom ROM.
Basically, I'm not sure what my trajectory should be if I wish to use a MIUI beta ROM, or if I wish to flash something like LineageOS while retaining or updating the touchscreen firmware appropriately. Can I simply unlock the bootloader, flash TWRP, then flash a custom ROM as I have done in the past on other devices? Can I update the touch firmware separately?
Any help would be much appreciated, thanks.
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If you flash a custom ROM over what you have (Oreo), you will retain the existing firmware & modem. If it is compatible with the ROM flashed, you will not have any issues.
It is possible to flash firmware & modem alone at any time if it is available separately.