[ROM][12L][OFFICIAL][tucana] CipherOS-3.4-COMET

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Senior Member
Dec 14, 2012
Quick summary of new update.
Bumped into the same issues during install as above; updater doesn't work, /sdcard is encrypted (looks very much like encfs), so best bet is to download rom to computer and adb sideload it.
Can confirm that the webview issue is resolved, it works reliably now in both apps that broke badly before.
Will keep posted with future developments.

Thanks a lot to all developers for developing this ROM!


Dec 25, 2018
Yes I think that you have to disable the screen lock.
Hi all, just confirming that I was able to dirty flash this update over 3.2 without disabling the screen lock. What I did:

- Reboot to recovery (TWRP)
- Select "Keep system read only" on startup when prompted
- Go to Advanced -> ADB sideload
- Check "Wipe cache" and "wipe dalvik" (both checkboxes)
- Swipe to enable ADB sideload
- Connect to a Windows PC, then on Powershell, do `adb sideload <filename.zip>`


Senior Member
Jan 14, 2007
Anyone have low in call volume? Maybe my ear piece speaker is defective but even at max I can barely hear people. the Call Quality thread on the FAQ says that the phone should have an extremely loud in-call volume.


Mar 21, 2008
Hi All, and Thx,

Should I download 20220523-1921 (modified the 24th) version ou 20220523-1959 (modified the 23th) ?

I am a little bit disappointed...


Jan 5, 2014
good night, i have few bugs.. On google photos app i can't modify any photo or video.. call earspeaker stops working randomly, i have to restart the phone each time, and recording videos on apps like instagram or snapchat is very low sound


Mar 21, 2008
I would like to say to problem I occur, I have done this steps :

1. Download TWRP here
2. Flash TWRP
3. Wipe Dalvik/Art Cache, Cache, System and Vendor
4. Format data
5. Reboot to recovery
6. Download CipherOS
7. Flash CipherOS using ADB Sideload
8. (Flash FW 12.5.4 if not already done)

but a big problem occurs, no ear sound when I phone call somebody, I have resolved this problem with the flash of FW 12.5.4 and flash again CipherOS using ADB Sideload

so I thing the proper steps to install this ROM is to :

1. Download TWRP here
2. Flash TWRP (fastboot flash recovery twrp.img)
if there is an issue to keep TWRP on recovery partition you have to "fastboot flash vbmeta vbmeta.img" from the following page https://unofficialtwrp.com/twrp-3-3-1-root-xiaomi-mi-note-10-tucana/, don't forget to unzip it)

3. Wipe Dalvik/Art Cache, Cache, System and Vendor
4. Format data
5. Reboot to recovery
6. Flash FW 12.5.4
7. Reboot to recovery
8. Flash CipherOS using ADB Sideload
9. Reboot to system

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  • 1
    Join to Telegram photography groupand channels for tucana:
    Nobody have my same problems?
    1-i think this is related to android 12 and twrp
    2-everything smooth (insta,twitter) but I once got twitter to stutter, I think the phone was thermal throttling since I was using it while charging(or using it heavily I don't remember)
  • 15
    ciphe2r copy.jpg2-Recovered.jpg

    CipherOS is a Android Custom OS, Based On AOSP & Fueled by Lineage, Striving to Provide its Users , A Clean , Bloat free & Sturdy Experience with Minimal Customisation !

    /* Your warranty is now void or maybe not?
    * I am not responsible for bricked devices, dead SD cards,
    * thermonuclear war, or you getting fired because the alarm app failed. Please
    * do some research if you have any concerns about features included in this ROM
    * before flashing it! YOU are choosing to make these modifications, and if
    * you point the finger at me for messing up your device, I will laugh at you.

    With the release of CipherOS KNIGHT , We Ensure that Every OFFICIAL Device remains Up-to-date with latest Patches , Asap its been released by Google !

    Download it from here

    The people working towards bringing you this release are:


    1. Download TWRP here
    2. Flash TWRP
    3. Wipe Dalvik/Art Cache, Cache, System and Vendor
    4. Format data
    5. Reboot to recovery
    6. Download CipherOS and copy it to your device
    7. Flash CipherOS
    8. (Flash FW 12.5.4 if not already done)

    Update the ROM:

    Download the newest CipherOS version manually or through the updater
    2. Remove your screen lock
    3. Boot to recovery
    4. Flash CipherOS in the recovery (for OTA users you find it in /data/cipheros_updates)
    (OTA will be automatic in the future)
    5. Wipe cache
    6. Reboot


    We would like to thank the following ROMs, because if they weren't here, we couldn't be there too <3

    Device Changelog

    Source Code:
    ROM Source
    Device Source
    Kernel Source

    what about donation for a new device?
    I'm planning to repair my device
    I will release a test build today for TG users who are in the device group
    New update is out. Now we are official.
    Official will be released in next few days