Installation Instructions For Bugless CyanogenMod 12.1 For MTK

These instructions must be followed correctly for the proper functioning of the ROM. Do not report any bugs if you did not follow these instructions properly.

You must only use the Gapps, Superuser and Gapps provided by me, If you use any other flash files, superuser apps then no support will be provided

1. Port the ROM
2. Flash
3. Reboot and do not flash Gapps, SuperSU and Dolby at all
4. After ROM has booted go to Settings > About Phone and tap of build number multiple times
5. After developer options have been enabled turn ON Advanced Reboot
6. Now go to recovery mode
7. Flash Gapps, SuperSU and Dolby now
8. Reboot
9. When you are at the lock screen you will get notification that "SIM has changed" double tap on it
10. Click on SIM 1 and rename "Card 1" to anything
11. Now you will get 3G working !

You now have a bugless CM 12.1 running on your MT6592 device

This patch for devices which have Non-Emulated storage (CM 12.1 V2.2 For MT6592 and V3 For MT6582)
Non-Emulated storage patch for MT6582
- After you have successfully booted the ROM and completed the above steps, download this patch
Download Patch

- Unpack boot.img and replace kernel and/or uevented.rc (only if you did so while you ported the ROM)
- Change /system mount point according to your mount point
- Flash
- Reboot

Non-Emulated storage patch for MT6592
- After you have successfully booted the ROM and completed the above steps, download this patch
Download Patch

- Unpack boot.img and replace kernel and/or uevented.rc (only if you did so while you ported the ROM)
- Change /system mount point according to your mount point
- Flash
- Reboot

Do not use this SD Card patch in CM 12.1 V3 for MT6582 or in CM 12.1 V2.2 For MT6592
SD Card As Default Storage For MT6582
- After you have successfully booted the ROM and completed the above steps, download this patch
Download Patch

- Unpack boot.img and replace kernel and/or uevented.rc (only if you did so while you ported the ROM)
- Change /system mount point according to your mount point
- Flash
- Reboot

SD Card As Default Storage For MT6592
- After you have successfully booted the ROM and completed the above steps, download this patch
Download Patch

- Unpack boot.img and replace kernel and/or uevented.rc (only if you did so while you ported the ROM)
- Change /system mount point according to your mount point
- Flash
- Reboot

102 comments:

  1. it gives me this

    error executing updater binary in zip sdcard cm 12.1 bugless

    ReplyDelete
    Replies
    1. there is no problem in the ROM or the ZIP, it is in your recovery. Change your recovery. Don't ask me which.
      Recovery is the cause 101%

      Delete
    2. i got the same problem, im using twrp v2.7.1.0. Any solution?

      Delete
    3. no provided link for that version , ur version in this site is 2.8.2 ,well . did philz that u uploaded there can flash this rom?

      Delete
  2. i correctly followed your instruction phn booted up everthing is working ecept sim card and camera fc... what to do ??

    ReplyDelete
    Replies
    1. there is a Q/A post for lollipop in this site, it addresses all your issues

      Delete
  3. Is this patch compatible with stock MTK rom 4.4.2?

    ReplyDelete
  4. Allz working well! Thnx Ajit!
    My only concern is the patch SD card as default it causes bootloops :(
    I ported the kernal and followed your instructions but still not working...

    ReplyDelete
    Replies
    1. yeah it causes bootloops for me too :3 How am i supposed to do this its always bootloops

      Delete
  5. hi ajit..i'm stuck at starting apps...i did replace /framework-res.apk/res/xml/storage_list.xml with 7zip..
    adb log--
    I/auditd ( 0): Starting up
    E/audit_log( 0): Could not stat audit logfile /data/misc/audit/audit.log: Permission denied
    E/auditd ( 0): Failed on audit_log_open
    I/auditd ( 0): Exiting

    ReplyDelete
    Replies
    1. take your time to read the post, it says something about "not commenting about anything which includes not booting"

      Delete
  6. Mr. Ajit all working well thankyou for the rom, after i flash the sd card patch my internal storage is missing xD

    ReplyDelete
    Replies
    1. the SD becomes your default storage, if you want internal storage too then don't use the patch

      Delete
    2. So tha't how it works. Thankyou for the rom

      Delete
    3. that's called emulated and non-emulated, if emulated 2 storages mount and in non-emulated only one storage mounts and I made a patch which makes your storage non-emulated and only mounts your sd card and recognizes the sd card as internal

      Delete
  7. i got it to work porting the original boot.img from pocarropa's build(cant make it ork with yours) and your system and data zip, anyways there is no sound and cant make sims to work any idea why?

    ReplyDelete
    Replies
    1. sorry but I only provide help for the original ROM content, since you modified it, I cannot help you.
      The new boot has many fixes in it by fire855 and ME, so it is needed

      Delete
    2. i totally understand that, anyway thanks dude, for some reason i couldnt port your boot.img it always get stuck on bootlogo ill try to keep fixing things by myself and btw keep the great work

      Delete
  8. is there another version of this ? kernel 3.10.x ? lollipop base rom

    ReplyDelete
  9. tut bro for showing internal storage on default file manager

    ReplyDelete
    Replies
    1. internal storage is already there, why you need to show it ?

      Delete
  10. friend can i use this rom in Karbonn machone without porting? It's a MT6582 device

    ReplyDelete
    Replies
    1. yes you can install without porting but you will get stuck in boot loop or soft brick

      Delete
    2. which recovery can i use for karbonn machone?

      Delete
  11. can i port rom from 5.0 to 5.1 there is a guide that says i cant but on the home of website there is a post about cm 12.1 for all mtk 6582 devices

    ReplyDelete
  12. I tried to port this rom to my coolpad 9976a, if i use libaudio.primary.default.so of this rom it boots, but there is no sound. If i use the lib from stock rom then it is stucking at starting apps. I tried all other options mentioned in the porting guide, but none works. Any solutions?

    ReplyDelete
  13. Hey bro as I u have u released a new cm 12.1 ROM for mtk6592 than plzzz update the SD card patch for this toooo will be helpful n new boot.IMG where no emulated storage bug

    ReplyDelete
    Replies
    1. first, get your meaning of what emulated and non-emulated stright. Emulated storage is not a bug ! Emulated storage is mounting 2 storages which is how all devices are. Get it ? Calling emulated storage a bug :v And don't tell me what to do, the more you spam the longer I will take. You spammed me with this about 5 times, I will take more than 5 days to make it

      Delete
    2. Bro sorry i mean to say that my internal storage is not displayed in file manager only SD card display and yup and one storage which is empty named emulated storage is also displayed which of only 3.56 GB and also in this storage apps get installed and it is default no internal storage of 16 GB anywhere to be find? I hope u understand

      Delete
    3. then say that your device is non-emulated why are you calling emulated storage a bug ? People read comments and this makes them think the ROM has a bug.

      Most devices (90%) are emulated and this ROM is made for them. Your device is non-emulated so you will call emulated a bug ? That is your device problem and not the ROM problem

      Delete
    4. I'm not saying that it's a bug I'm just asking the patch for it u have provided it earlier as SD card as default storage that's why I'm asking

      Delete
    5. you just said bug in your first comment, you have spammed me a lot and this has made me angry I will take a lot of time to make it

      Delete
    6. Hey bro I have no intetion to hurt ur feelings I just said bug in my ROM I just couldn't find the appropriate words to say this this so I said bug plzzzz help me it'll be really helpful
      Plzzzzzzz

      Delete
    7. Sir don't know why are u not replying I'm sorry plz* help here

      Delete
  14. Hey bro I have no intetion to hurt ur feelings I just said bug in my ROM I just couldn't find the appropriate words to say this this so I said bug plzzzz help me it'll be really helpful

    ReplyDelete
  15. boss need help for camera tried all patch & copy from stock to port on latest cm built 12.7 any other help will be appericite

    ReplyDelete
    Replies
    1. go to the Q/A post and follow the green camera fix don't replace anything other than the files mentioned there
      MT6582 or MT6592 ?

      Delete
    2. Hey bro plzzzzzzzzzzz update the patch I'm really sorry 🙏

      Delete
    3. i have the same problem. Mine is mt6582 and every patch but nothing helped. Each and every way you described............

      Delete
    4. Camera working Now Thanks Awsome build 12.7

      Delete
    5. enjoy :D you might also like the DecepticonOS MOD for the new CM 12.1 build you are using

      Delete
    6. In Oct Os I Had All 3stroage's internal 4Gb
      phone Stroage 4Gb & Sd Card But
      in This I Have Only Internal Stroage & Sd Card No Phone stroage Will This Post Can Help Me To resturn missing phone stroage

      Delete
    7. Mtk hacker sir plzzz update the patch sir

      Delete
    8. how to decrease in call volume. its too high even in the lowest bar. Plzz help me
      and camera bug fixed :)

      Delete
    9. replace libaudio.primary.default.so and restore NVRAM via MTK Droid Tools

      Delete
    10. i have Only Internal Stroage & Sd Card But No Phone Stroage Any Fix For That

      Delete
  16. hello..my camera is showing 8 mp only can i get a fix...i tried previous version of cm but showed 8mp..is there any workaround ?

    ReplyDelete
    Replies
    1. go to Q/A post for lollipop and try the green camera fix and if it doesn't work then there is no workaround

      Delete
  17. Hi, bluetooth is still not working in the latest build. Bluetooth turns on but whenever i send files through bluetooth,it stops. I used the fix on the Q/A but it worsen the problem. It won't turn on now. I hope you can help me with this one. thanks.

    ReplyDelete
    Replies
    1. use /etc/bluetooth from a previous CM build in which bluetooth was working

      Delete
  18. Does it work for mt6592m as well?

    ReplyDelete
  19. ported and flashed cm12.1 bugless for mt6572 but the phone is stuck at bootlogo. Ported unevented.rc but then also it doesnt get past the boot logo. flashed using philz touch recovery v6.59.

    Any way to make this work????

    ReplyDelete
    Replies
    1. I will update the porting guide soon, but I am really busy with studies as I have very important exams in about a week

      Delete
    2. he he i got exams too , good luck ;)

      Delete
    3. Doing the old porting guide my whole screen went haywire.

      Using the updated porting guide , now i have simple bootloop :(. shoud i just compare the unevented.rc without porting zimage?

      Delete
    4. ofcourse you have to replace zimage that's the most important thing in the whole porting process, instead of comparing uevented.rc just replace from stock to port and try

      Delete
    5. replacing unevented.rc makes my screen go dead like with grains in tv. Its worse than bootloop :(

      Delete
  20. This comment has been removed by the author.

    ReplyDelete
  21. Help me..

    How to replace storage.list.xml,
    Decompile/Recompile framwork-res.apk or not?
    Stuck Starting apps.

    Thanks you MTKROM

    ReplyDelete
    Replies
    1. you can use any method you feel easy with

      Delete
    2. Fixed stuck starting apps

      Please help me..

      Delete
  22. I cant move any apps to sdcard. How to fix it?
    thanks

    ReplyDelete
  23. Doea this work with mt6582,512MB of ram ?

    ReplyDelete
  24. I have an MT6582 device running on stock lollipop 5.0 and kernel v3.10.54... Can I port this rom to my device? Please help!

    ReplyDelete
  25. help phone stroage not mounting

    ReplyDelete
  26. i have a mt6592 device running kitkat 4.4.2 kernel 3.4.5-566212 , can i port this rom to my phone? please let me know
    Thanks in advance for you attention...

    ReplyDelete
    Replies
    1. a kitkat device running 3.4.5 kernel ? the possibilities are only 1% I believe that the build.prop is edited to show android version as 4.4.x whereas it is 4.2.2, you can edit build.prop and change android version to even 100 if you like. Try using some apps which only run in kitkat, you can go to google playstore to check if android wear works

      Delete
  27. Hi i ported the bugless cm12.1 fo mt6572 for my device but no audio even after replacing the libaudio.primary.default.so file. Please help and great work (y).

    Also i downloaded my stock rom from another site but it doesnot have a system folder but has a firmware folder with many img files. Is there any way to extract the system folder out of it?

    ReplyDelete
    Replies
    1. this seem to be a problem with all cm roms except pacrom. :| Is there any patch/fix for this problem? Installing another theme does not seem to help

      Delete
    2. this seem to be a problem with all cm roms except pacrom. :| Is there any patch/fix for this problem? Installing another theme does not seem to help

      Delete
    3. 1. please do not spam !!!
      2. replace soundfx folder from pacrom and libaudio.primary.default.so from pacrom

      Delete
  28. I ported the ROM to ThL W200C (Android 4.4.2).

    Issue #1:
    I can't make 3G to work.
    SIM only works in 2G mode. If I change to 3G mode, the signal is lost and the "SIM has changed" notification comes up.
    Things I tried:
    - Changed SIM 1 card name
    - CM 3G fix zip
    - Network drop fix (95%)

    Issue #2:
    Internal SD card should be 4GB. Now it reports 2GB. Is it normal?

    ReplyDelete
    Replies
    1. Also, there is a permanent exclamation mark over the signal bar. What does it mean?

      Delete
  29. Another issue: I can't move any app to sd card. It says there is not enough space.

    ReplyDelete
  30. Hey I would like to ask 1 question. Can I change the build.prop to mine?

    ReplyDelete
    Replies
    1. yes you can, but give proper credits if you are about to share. Contact me using the contact forum in this site and send me links of your post

      Delete
  31. This comment has been removed by the author.

    ReplyDelete
  32. 3gp vedeo and gaap not working in cm12.1 v2.2 for mtk6592

    ReplyDelete
  33. Can you help me? My sim card isn't recognized. I've seen your bug fixing post but none of them worked. Sorry if I spammed

    ReplyDelete
  34. These ROM is compatible on wiko rainbow?

    ReplyDelete
  35. why not use SD card default for MTK6582 cm 12.1 v3 ? says it s for mtk 6582 !!

    ReplyDelete
  36. How to Change Mount Points Sir Ajit? Thank you

    ReplyDelete
  37. Hi, i ported this CM12.1 on O+ Grande and i succesfully booted this rom. What is the use of Non-Emulated storage patch?

    ReplyDelete
    Replies
    1. if you do not know what non-emulated patch is for then you have no use for it

      Delete
  38. Hi Just ported your rom to my device, works great, camera was green but got it fixed, 3G was not working but fixed it, only things are that it doesn't detect my IR receiver so I can't use remote control app and battery is draining very fast, I can lose like 50% after a night a sleep not touching it probably due to the tap screen to wake function that I cannot disable in settings. Usually it drops only 1 or 2% for a night. Do you have a solution for these issues? Except for that Thank You for this rom I love it its very nice!

    ReplyDelete
    Replies
    1. www.mtkroms.com/2015/11/fix-bugs-in-all-cyanogenmod-12-roms-mtk.html follow the sensor fix patch zip

      Delete

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