yashsingh1/xdaforums huggingface dataset:
[Realme C12 Guides, News, & Discussion] HemanthJabalpuri:
Are you disappointed to see that there are no threads in Development section of XDA?

No worries, since Realme C11, C12 and C15 MTK share similar specs, things that are made for other two devices will work in our device too.

So our Custom ROMs and TWRP etc., are at Realme C11 forum https://xdaforums.com/f/realme-c11-roms-kernels-recoveries-other-deve.10991/

Flashing Custom Recovery

First backup stock recovery

- Download latest TWRP from here in your PC

- Download vbmeta.img from here in your PC

- Place those two .img where platform-tools is extracted.

- Rename recovery file to custom-recovery.img

- Run below commands in command prompt that you opened above

fastboot --disable-verification --disable-verity flash vbmeta vbmeta.img
fastboot flash recovery custom-recovery.img
fastboot reboot recovery

Custom Recovery is not permanent when you are using Stock ROM. It will be replaced with stock recovery after you boot to Stock ROM.(See 2nd post to overcome this)

There is no Hardware button Combo like Power + Vol Up to boot to recovery mode. Only way is to use adb/fastboot or root

Spoiler content hidden.

Flashing Custom ROMs

- Download custom ROM from here

- Place it in your External SDCard

- Backup the things in your InternalStorage, because we are going to wipe it.

- Boot to TWRP with below command

adb reboot recovery

- Choose Wipe and select Format Data and type yes

- Go back and choose Install and choose External-Storage in Select Storage at bottom

- Select the custom ROM zip that you downloaded above

- Flash it and Reboot

- Enjoy!

Spoiler content hidden.

List of ROMs for C12

​

Below ROMs are only for UI1. So don't flash when you are in UI2

Havoc-OS

ArrowOS

LineageOS

exTHm UI

PixelPlusUI

WaveOS

CipherOS

PixelExperience Plus

FluidOS

PixelExperience

Thanks
[Realme C12 Guides, News, & Discussion] HemanthJabalpuri:
How to stop stock ROM from flashing stock recovery and keep custom recovery?

To do this, you need to root your C12 with Magisk.

Flash below attached RealmeRecoveryKeep.zip in Magisk app and flash custom recovery. Enjoy it accross reboots in stock rom.

Any recovery like TWRP, PBRP, SHRP, OrangeFox etc., will work with this.

Flashing Stock Recovery

Flashing it is same as TWRP.

Below I have attached Stock recovery from A.83, but it may work with any other version of UI1.

Don't flash this in UI2

First extract the zip and flash like TWRP.

SHA1 of img is:- a6ceb27226d09d6fbe9069f5e9f5448efaa10268

Guide for Flashing Stock ROM is at https://xdaforums.com/t/gsi-phh-q-r-gsi-flashing-for-realme-c12.4244979/post-84630979

Thanks
[Realme C12 Guides, News, & Discussion] JustAnormalGuy:
I can't backup stock recovery. Getting this error:

adb: error: failed to copy '/dev/block/by-name/recovery' to '.\recovery': remote open failed: Permission denied

My bootloader is unlocked and I got magisk working.
[Realme C12 Guides, News, & Discussion] HemanthJabalpuri:
Since you are rooted, run below commands in Termux to backup stock-recovery to internal storage.

su
dd if=/dev/block/by-name/recovery of=/sdcard/stock-recovery.img

Copy this stock-recovery.img to a safe place in your PC or External SDCard.

And also you can flash TWRP using

su
dd if=/sdcard/TWRP.img of=/dev/block/by-name/recovery
[Realme C12 Guides, News, & Discussion] maz01:
thanks a lot, i thought I got stuck with stockrom and have developer support for it
[Realme C12 Guides, News, & Discussion] Shawmik:
Hi!

I need to flash back my stock recovery. I have a question.

Should I flash the vbmeta.img too at first? (Just like I did while flashing twrp?)
[Realme C12 Guides, News, & Discussion] HemanthJabalpuri:
It is not needed, but flashing it will not do any harm.

Thanks
[Realme C12 Guides, News, & Discussion] Zeyn0101:
hello pa i need your help i can't flash castem room and stock room there is an error in my twrp
[Realme C12 Guides, News, & Discussion] HemanthJabalpuri:
Send the error picture
[Realme C12 Guides, News, & Discussion] Zeyn0101:
I can't post a photo here, may I ask your Instagram to send a photo of my twrp error
[Realme C12 Guides, News, & Discussion] HemanthJabalpuri:
Upload at https://oshi.at/ and send here
[Realme C12 Guides, News, & Discussion] Zeyn0101:
https://oshi.at/vZrBLB
[Realme C12 Guides, News, & Discussion] HemanthJabalpuri:
Spoiler content hidden.

Follow this https://xdaforums.com/t/unbrick-your-realme-c12.4260759/post-84859061
[Realme C12 Guides, News, & Discussion] Ryzen010:
where do i get the super.img file
[Realme C12 Guides, News, & Discussion] GreatTech:
I would like to ask if the roms above now work on Realme C12 ui2 and if it's safe to flash a custom rom? Especially Arrow OS? Why can't they be flashed on ui2? Any idea on how to downgrade to ui1 so that I can flash it with Arrow OS?
[Realme C12 Guides, News, & Discussion] HemanthJabalpuri:
There is only Lineage OS for UI2 which is at https://github.com/techyminati/releases/releases/tag/1.0.2-RMX2185

Other ROMs based on UI2 will come soon.

Also if you want to downgrade to UI1 follow below steps

- Flash TWRP from https://androidfilehost.com/?fid=7161016148664786711 (Don't use other TWRP)

- Boot to TWRP

- Enable 'Skip Treble Compatibility error' in settings

- Flash ozip

- Format Data and wipe cache

- Reboot
[Realme C12 Guides, News, & Discussion] GreatTech:
Hi! Thank you for the reply HemanthJabalpuri ! I would like to ask if you know the download link for ozip? I'm familiar with the other steps on TWRP except for ozip? Would I need to download ozip on Realme C12 or is it a setting? Do you know a reliable, stable and trusted download link for ozip? I apologize for the dumb question. Thank you for the explanation btw, I appreciate it! :)
[Realme C12 Guides, News, & Discussion] HemanthJabalpuri:
Normally, you can download latest stock rom(which is usually in .ozip format) can be found at realme website by searching 'Software update - realme' in Google to go your region specific site.

But many custom ROMs have bugs with different versions of stock rom. So suggested stock version version to be less buggy with custom roms is A.87.

All the latest and older .ozips can be downloaded at https://realmeupdater.com/downloads/archive/RMX2185/

So for A.87, here is the link for it https://download.c.realme.com/osupdate/RMX2185_11_OTA_0870_all_1TbYEnns8MEW.ozip

Thanks
[Realme C12 Guides, News, & Discussion] GreatTech:
Oh wow, nice. Thank you so much for this! I appreciate the help! 😃
[Realme C12 Guides, News, & Discussion] GreatTech:
followed the steps you listed carefully, can't believe that it worked, thank you for the detailed instructions man, I successfully downgraded to realme ui1.
[Realme C12 Guides, News, & Discussion] hasnainali2404:
The ROM which is made for realme c11 will perfectly works on realme c12?
[Realme C12 Guides, News, & Discussion] HemanthJabalpuri:
Yes.

C11/C12/C15 Mediatek use same firmware. So it is not a issue.
[Realme C12 Guides, News, & Discussion] restutriew:
can u help sir. when i wipe data always error and said "Failed to mount '/metadata' (invalid argument)"
[Realme C12 Guides, News, & Discussion] HemanthJabalpuri:
I guess you can ignore it. Do 'Format Data'
[Realme C12 Guides, News, & Discussion] restutriew:
install rom is success but when i reboot there was message

Orang State

This Device has been unlocked and can't be trusted

And not stop rebooting
[Realme C12 Guides, News, & Discussion] HemanthJabalpuri:
Orange State message is normal when we unlock bootloader. Nothing to worry.

Which ROM you installed? Try to boot to bootloader and run fastboot -w. If it still not helps, try to flash ArrowOS. Follow the steps in the guide carefully.
[Realme C12 Guides, News, & Discussion] restutriew:
i was trying fastboot -w and use ArrowOS but still same. And under orang state there was text

Error : CMDLINE overflow.

My device is running UI2. Did was that the problem?
[Realme C12 Guides, News, & Discussion] HemanthJabalpuri:
Yes, all the ROMs that I listed are for only UI1. So, those will not work in UI2.

To use those ROMs, you have to downgrade to UI1 and then flash ROMs.

Downgrade

- Flash TWRP from https://androidfilehost.com/?fid=7161016148664786711 (Don't use other TWRP)

- Download StockROM of UI1 from https://download.c.realme.com/osupdate/RMX2185_11_OTA_0870_all_1TbYEnns8MEW.ozip and keep it in Micro SD Card.

- Boot to above flashed TWRP

- Check 'Skip Treble Compatibility error' in TWRP settings

- Flash above Stock ROM

- Format Data and Wipe Cache

- Reboot
[Realme C12 Guides, News, & Discussion] Akashvp40:
Hi sir .I would like to flash MIUI in realme c12 then what are the requirements,and steps.
[Realme C12 Guides, News, & Discussion] barusu:
Sorry for tagging / mentioning you HemanthJabalpuri . I am curious if the custom roms, twrp and bootloaders here on realme C11 will work on Oppo A16 (CPH2269). realme C11, C12 and C15 (MTK Devices) works using the same tools. However checking the specs of Oppo A16, does it work? its hardware is also the same
[Realme C12 Guides, News, & Discussion] HemanthJabalpuri:
Might work, but what about bootloader unlocking? Did you unlocked bootloader using MTK Client yet? If, yes then try flashing TWRP since if it bricks then you can easily restore stock recovery by flashing it using MTK Client or SP Flash Tool.

Make sure to backup everything(dumping all important partitions like nvram, nvcfg, proinfo, protect1, protect2, super, boot, recovery) before doing any experiment.

Thanks
[Realme C12 Guides, News, & Discussion] Rold24:
I STILL FOLLOWED HOW TO INSTALL BUT STILL STOCK LOGO
[Realme C12 Guides, News, & Discussion] vinay_bikram:
Is this method going to work for RMS 2189...I am facing problem while executing the command "adb root"....my device is not rooted..could you please guide me further?
[Realme C12 Guides, News, & Discussion] HemanthJabalpuri:
That adb root is not going to work in UI 2.0 I guess. You can skip backup of stock recovery part and continue to flash TWRP
[Realme C12 Guides, News, & Discussion] vinay_bikram:
while executing this command

"fastboot --disable-verification --disable-verity flash vbmeta vbmeta.img"

I am getting this response in cmd promt

"< waiting for any device >"

what's wrong in this case

although adb is able to recognise the device but fastboot cannot

I have also attached a screenshot
[Realme C12 Guides, News, & Discussion] HemanthJabalpuri:
That's because of drivers not installed correctly, see bootloader unlock guide and there you will find
[Realme C12 Guides, News, & Discussion] undersnde32:
Hellow sir can you help I accidentally flash stock recovery in my realme c12 ui 2 and know it's just a blank screen with realme logo and when I try to reboot using power button and volume down it doesn't enter recovery mode and I even use buggager app and still connected but no serial number sir please help me I really need your help how can I fix this when it doesn't connect to the adb and doesn't boot in recovery mode
[Realme C12 Guides, News, & Discussion] HemanthJabalpuri:
Take a look at https://xdaforums.com/t/unbrick-your-realme-c12.4260759/
[Realme C12 Guides, News, & Discussion] undersnde32:
Sir I have a question I know it's dumb how to flash the file when the phone doesn't boot in recovery mode I know it's dumb question sir and one promblem is I don't have computer I only use another phone and use an app called buggager that's the problem sir and the phone connect to the other phone but it says no serial number and un-authorized is their any solution to this sir using another phone and use otg and debugging mode or I need a computer? I know it's a dumb question but I hope Thier is a reply 🙏
[Realme C12 Guides, News, & Discussion] HemanthJabalpuri:
When rebooting, hold Volume Down button. It will boot to fastboot mode. Or power off and hold Power + Volume Down to boot to fastboot mode.
[Realme C12 Guides, News, & Discussion] undersnde32:
Sir that's the problem I'm sorry sir if I keep saying it again And again the problem to my phone is it doesn't boot to fastboot or recovery mode because I flash the wrong recovery file my question sir is there any chance that I can use to my phone again 😭 because even the adb can't do any but maybe if I use computer or I will repair it to the professional who knows what to do is maybe is there a chance that I can use my phone again as you mentioned earlier sir I should use latest platform to force connect my phone to the computer and flash a stock rom of realme is that correct sir . Sorry sir for my English btw sir I'm grateful that you still replying me even though your busy 💖
[Realme C12 Guides, News, & Discussion] HemanthJabalpuri:
It's better to take your device to Service Center. Solution for this is to flash full stock ROM (which they will do), or just recovery partition. In either case, you need a PC to flash when device can't boot to fastboot mode.
[Realme C12 Guides, News, & Discussion] undersnde32:
Ok sir thank you for everything. I appreciate your patience and support. Thank you sir💖
[Realme C12 Guides, News, & Discussion] Dimo33:
hi did it work?
[Realme C12 Guides, News, & Discussion] talhabd06:
After Installing custom rom wifi and bluetooth not working any soliuton
[Realme C12 Guides, News, & Discussion] HemanthJabalpuri:
What's that custom ROM?

It's probably because mismatch in vendor and kernel versions. You have to flash the stock ROM version that is mentioned in the ROM thread before flashing custom ROM.

Try using other ROMs or GSI

My ROMs in Realme C12 Development (ArrowOS, Havoc-OS, crDroid) don't have such thing since I am using custom kernel.

Thanks

HemanthJabalpuri
[Realme C12 Guides, News, & Discussion] Ammar128:
To which partition should I flash the zip file ?

Can I use fastboot to flash ?

Thank you.
[Realme C12 Guides, News, & Discussion] Ammar128:
I managed to figure it out but TWRP only boots with fastboot reboot recovery or adb reboot recovery no key combos.

When using key combos it boots into fastboot mode

while showing this message

use the new struct
the model name is match
oplus verify fail
need to verify signature of another brand
oplus verify pass
fastboot verify success
fastboot_unlock_verify ok
[Realme C12 Guides, News, & Discussion] KyyLokzz:
Can Lineage OS UI2 with codename RMX 2185 be installed on RMX2189? Because even though the UI version is the same, the codename is different... I was hesitant to install it, for fear of a bootloop.
[Realme C12 Guides, News, & Discussion] HemanthJabalpuri:
Yes, all three (C11-RMX2185, C12-RMX2189, C15-RMX2180) use same ROMs.
[Realme C12 Guides, News, & Discussion] KyyLokzz:
okeyy, thanks broo
[Realme C12 Guides, News, & Discussion] KyyLokzz:
is this one also the same? it says Android 13 but with UI2... do I need FW to be able to install it?

Release LineageOS 20 for realme C11/12 (RMX2185) · techyminati/releases

LineageOS 20 - RMX2185 Changelog : Stable Android 13 for RMX2185 Android 13 - QPR2 March Security Patch Build is Encrypted & SELinux is Set to Enforcing Build Ships with Minati Kernel 2.0 (Linux...

github.com
[Realme C12 Guides, News, & Discussion] KyyLokzz:
can anyone help me?
[Realme C12 Guides, News, & Discussion] HemanthJabalpuri:
You need to install C.05 version of UI 2.0 and then install LOS on top of that.

Download C.05 from https://sourceforge.net/projects/techyminati/files/ozip/RMX2185_11_OTA_C.05_DECRYPTED.zip/download
[Realme C12 Guides, News, & Discussion] KyyLokzz:
bisa

can you tell me how to install it? I don't understand how to install or install it, this problem occurred when I finished customizing my cellphone with Lineage OS, wifi + bluethoot + hotspot couldn't turn on
[Realme C12 Guides, News, & Discussion] KyyLokzz:
C.05? Does it work for my cellphone which is originally C.13?
[Realme C12 Guides, News, & Discussion] KyyLokzz:
can anyone help me? until now I still can't fix it, I need a tutorial... can anyone help?
[Samsung Galaxy S21 Ultra] drich66:
I had Sprint from their inception. @ weeks ago I was told to go to T Mobile to replace the SIM card. Then the T Mobile apps and splash screen / boot logo replaced the Sprint. Not happy w T- Mobile, I contacted Sprint and requested the phone be unlocked, since I own the phone and purchased it through Samsung, locked for Sprint at the time. They unlocked it and then I went to Verizon. They confirmed it was unlocked and compatible, they inserted a Verizon sim card and now I have Verizon on the status bar. However, I still have the T Mobile start up screen as well as the shut down screen. I un installed all the T Mobile apps, restarted many times, but still have the T-Mobile boot screen. Phone is stock with latest updated, Any help appreciated, Thanks
[Samsung Galaxy Note 20 Ultra Questions & Answers] SyntheticVirusZ:
I've never flashed a cellphone and I don't even know if I can flash this one. I bought the phone through and when I was still with Sprint. I was told flashing it might be tricky if not impossible since I bought it through a carrier and was also told to come here and ask. So that's what I am doing. Thanks for any help!
[Samsung Galaxy Note 20 Ultra Questions & Answers] dr.ketan:
Even you haven't said what you want to flash and why (mean what you want to achieve with flashing)
[Samsung Galaxy Note 20 Ultra Questions & Answers] *Detection*:
As above, what do you want to achieve by flashing it, and what do you want to flash to it?
[Samsung Galaxy Note 20 Ultra Questions & Answers] SyntheticVirusZ:
I'm sorry. It was a little late at night and I was trying to put the child down for sleep and was in a hurry. But I'm looking to just flash a stock ROM to get the vendors (Sprint) pre-installed apps off the phone. So I'm not looking to do anything to fancy.
[Samsung Galaxy Note 20 Ultra Questions & Answers] dr.ketan:
Try flashing non vendor specific rom. But before that simply keep copy of rom which is installed currently, so in case something went wrong, you can restore it.

You can download stock firmware with friza or Sam firmware tool (little search over xda you can find it)
[Samsung Galaxy Note 20 Ultra Questions & Answers] SyntheticVirusZ:
Okay, so I used Frija to get the file and now I'm using Odin to flash it. I have the BL, Ap, Cp, CSC, and USERDATA files. Only issue I have is I have two CSC files and I'm not sure which one to use? One is called HOME_CSC_OMC_OYN_N986UOYN1DUB5_CL20936746_QB38027387_REV00_user_low_ship_MULTI_CERT.tar.md5 and the other is CSC_OMC_OYN_N986UOYN1DUB5_CL20936746_QB38027387_REV00_user_low_ship_MULTI_CERT.tar.md5. I want to say it's the second one I mentioned but I want to make sure.
[Samsung Galaxy Note 20 Ultra Questions & Answers] dr.ketan:
Home_CSC* won't delete your data while CSC_* will do.
[Samsung Galaxy Note 20 Ultra Questions & Answers] SyntheticVirusZ:
What data is the Home file saving? Also what's the USERDATA file?
[Samsung Galaxy Note 20 Ultra Questions & Answers] dr.ketan:
All other data that you have addled other than factory set.

Some apps install as non system, that known as userdata
[Samsung Galaxy Note 20 Ultra Questions & Answers] SyntheticVirusZ:
Okay, Odin said it passed and my phone restarted to a Android Recovery section giving me a ton of options and now I'm nervous... The options are.

Reboot system now

Reboot to bootloader

Apply update from ADB

Apply update from SD card

Wipe data/factory rest

Wipe cache partition

Mount /system

View recovery logs

Run graphics test

Run locale test

Power off

Repair apps

Do I just want to reboot it?
[Samsung Galaxy Note 20 Ultra Questions & Answers] SyntheticVirusZ:
Okay so I restarted it and the phone works, but everything is still the same. If I do a factory restore will that remove Sprint's apps? Or should I redo the process without adding the CSC and USERDATA files?
[Samsung Galaxy Note 20 Ultra Questions & Answers] SyntheticVirusZ:
Sorry for bumping this but does anybody know the answer to my question?
[Samsung Galaxy Note 20 Ultra Questions & Answers] *Detection*:
From what I remember once you flash an unlocked firmware (ie. Not carrier branded) you need to factory reset to remove the carrier stuff from the old firmware

But don't quote me on it, just what I remember reading from others threads, I've not had to try it myself
[Samsung Galaxy Note 20 Ultra Questions & Answers] SyntheticVirusZ:
Sounds good. I'll try it when I get home later and am more prepared and report back. Thanks for the help so far everyone!
[Samsung Galaxy Note 20 Ultra Questions & Answers] *Detection*:
You can kill 2 birds by using CSC instead of HOME_CSC when you flash the firmware, that initiates a factory reset after the flash (ie. Clean install)
[Samsung Galaxy Note 20 Ultra Questions & Answers] SyntheticVirusZ:
Actually I might just do that then tonight.
[Samsung Galaxy Note 20 Ultra Questions & Answers] SyntheticVirusZ:
Unfortunately, it didn't work... Not sure if I did something wrong but Sprint's app's are still on there.
[Samsung Galaxy Note 20 Ultra Questions & Answers] dr.ketan:
Which ROM you have downloaded?

If you are flashing same sprint then it will always remain there. Make sure you are flashing unbranded firmware.
[Samsung Galaxy Note 20 Ultra Questions & Answers] SyntheticVirusZ:
I'm using the one I got through following the instructions using Frija.
[Samsung Galaxy Note 20 Ultra Questions & Answers] dr.ketan:
What information you have added to friza whie searching ROM? specially CSC
[Samsung Galaxy Note 20 Ultra Questions & Answers] SyntheticVirusZ:
I did the *#1234# trick to obtain the CSC. I used this guide, https://technastic.com/frija-samsung-firmware-download-tool/amp/. If you scroll down the page there are some example pictures demonstrating how to find it. I used the code that's highlighted #2 because that was the code used further in the explanations. That code for me is SPR witch I had this hunch was Sprint. So now I'm thinking I needed to use the area highlighted #1 and that's OYN. I hope I explained what I'm talking about well enough for you guy's... Let me know if there's something you don't understand and I'll try to explain it better.
[Samsung Galaxy Note 20 Ultra Questions & Answers] dr.ketan:
If you download SPR (sprint) then likely all apps will remain there. First you needs to find out which csc for your device doesn't have branded os and then try it
[Samsung Galaxy Note 20 Ultra Questions & Answers] SyntheticVirusZ:
Sounds good. Once I get home later I will do that and report back!
[Samsung Galaxy Note 20 Ultra Questions & Answers] *Detection*:
The unlocked/unbranded firmware for the U model N20U is the U1 firmware iirc

Read this thread

https://xdaforums.com/t/ota-and-non-ota-firmware-for-n986u-and-n986u1.4143833/
[Samsung Galaxy Note 20 Ultra Questions & Answers] SyntheticVirusZ:
And I want to be using the unlocked version correct?
[Samsung Galaxy Note 20 Ultra Questions & Answers] *Detection*:
Yea unlocked = unbranded = no carrier stuff

But read carefully before jumping in head first, make sure you understand what you're doing, for example you can't use normal odin as per the tutorial
[Samsung Galaxy Note 20 Ultra Questions & Answers] SyntheticVirusZ:
Gentlemen, I have some wonderful news to give. Everything thing is totally perfect! Thanks to the both of you very very much. I truly appreciate it.
[Samsung Galaxy Note 20 Ultra Questions & Answers] *Detection*:
(y)
[Samsung Galaxy Note 20 Ultra Questions & Answers] marcoccio21:
I also have a note 20 ultra 5G but it says that it is up to date for my particular model

Android version: 11

Baseband version: N981USQU2DUJ6 (Note20 5G), N981USQU2DUJ6 (Note20 Ultra 5G)

File size: 673MB (Note20 5G), 681MB (Note20 Ultra 5G)
[Tilt, TyTN II, MDA Vario III Themes and Apps] OnebadMF:
I did a quick search and cant seem to find any program that will let me sign a PDF document and send it back via email...

I have multiple faxes daily and being able to sign documents on the run would be a great feature to have available on the phone... Anyone know how i can accomplish this?:confused:
[Tilt, TyTN II, MDA Vario III Themes and Apps] OnebadMF:
just to clarify, my faxes show up as email attachments that i can download on the phone
[Tilt, TyTN II, MDA Vario III Themes and Apps] Ben daniel:
Softmaker office 2008 will allow you to open up, edit and "pdf" word and excel powerpoint documents on your PPC. It may be a sollution?