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[ROM][7.1.2][UNOFFICIAL] AIM OS v2.5 for Lenovo A7600-F [MT6582][Port]

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SaberShip

Senior Member
May 15, 2017
54
63
Hello to all you Lenovo A7600-F owners! I've Got yet another Android Nougat ROM ported to the Lenovo A7600-F Tablet! This one is very stable, smooth, and has the least bugs of any ROM i've ported to the A7600-F. :D


Android Version: AIM OS v2.5 (Android 7.1.2)
Security Patch Version: November 6, 2017
Kernel Version: 3.4.67 (kk)


First of all special thanks to:
-The AIM OS ROM team
-S M Nahid Emon (From romclaims.com for the portable MT6582 ROM)


Working:
-Wifi, Bluetooth, Root, Storage, etc...
-Camera (Pictures, Video)
-Youtube (Up to 720p30)
-Substratum Themes (Latest OMS Themes work great! Still smooth!)
-FM Radio :cool:
-GPS!


Not Working (kind-of):
-Camera video recording is laggy on default settings.
-FM Radio in loudspeaker mode (It only works in headphone mode)
-Let me know if you find something else.


Installation:
-Step 1: Don't download this ROM, I recommend you try this ROM instead. It is also ported by me but has far fewer bugs and has newer patches. Over a year later, I still see people installing this ROM ): Do yourself a favor and try out the newer one.

-Download Rom
-Download Gapps
-Backup your current ROM
-Flash ROM using TWRP 3.x.x.x
-Flash Gapps
-Reboot


Notes:
-To get brightness to change, turn off Adaptive brightness.
-Substratum seems to work best with root enabled (in Developer Settings) and after a reboot.


Downloads:
-TWRP Download
-ROM Download
-GAPPS Download (Choose ARM - 7.1 - pico or nano)


Emulated Storage Fix:
-For those of you who have wiped/formatted "Internal Storage" with my TWRP recovery, you will likely not have proper access to internal storage in this ROM. If you have internal storage issues try to flash this boot image to /boot with TWRP's builtin .img flash utility. Download storage fix image here.

Kernel Source: here

Changes:
-Revision 2:
Fix Storage issue (For people with physical internal storage).
Update Launcher to new Pixel Launcher 8.1 4429924
Removed unnecessary service startups related to SIM/Modem
 
Last edited:

Srisri7

Member
Jul 8, 2017
35
3
Hello to all you Lenovo A7600-F owners! I've Got yet another Android Nougat ROM ported to the Lenovo A7600-F Tablet! This one is very stable, smooth, and has the least bugs of any ROM i've ported to the A7600-F. :D


Android Version: AIM OS v2.5 (Android 7.1.2)
Security Patch Version: November 6, 2017
Kernel Version: 3.4.67 (kk.......
Thank you so much.. Give your link so that we will donate you.. I will definitely try it. .. But could you try any other roms like resurrection remix or rom with android 8.0.. Anyway thanks a lot again
 

SaberShip

Senior Member
May 15, 2017
54
63
Thank you so much.. Give your link so that we will donate you.. I will definitely try it. .. But could you try any other roms like resurrection remix or rom with android 8.0.. Anyway thanks a lot again

In regards to the Resurrection Remix: I'll look into it. Iv'e got a Resurrection Remix rom running but its got some issues that need fixed.

Hello. @SaberShip, I'd like to build RR on this tablet. Where can I find the device and the kernel source code for this device? Is it tough to build?
Thanks :)

Lenovo has the source on their developer pages I believe. I have not even messed with the source though, I've also heard that it might not be complete.
 

pacorrop

Member
Feb 1, 2011
43
12
In regards to the Resurrection Remix: I'll look into it. Iv'e got a Resurrection Remix rom running but its got some issues that need fixed.



Lenovo has the source on their developer pages I believe. I have not even messed with the source though, I've also heard that it might not be complete.

Ok cool! Thanks for that. I'll give it a try.
Anyway, given that you're trying to build RR as well... may I ask you where to find this needed stuff? I mean, I'll download the sources from Lenovo (which are for KitKat, according to their website); but you're not using these sources for RR and Nougat, right? Where can I find the sources you are using? Ahh or you may be using compiled kernel and device blobs, right?
Sorry for the off-topic; if further conversation is needed, I'll write you a PM instead.

Thanks again :)
 
Last edited:

SaberShip

Senior Member
May 15, 2017
54
63
Ok cool! Thanks for that. I'll give it a try.
Anyway, given that you're trying to build RR as well... may I ask you where to find this needed stuff? I mean, I'll download the sources from Lenovo (which are for KitKat, according to their website); but you're not using these sources for RR and Nougat, right? Where can I find the sources you are using? Ahh or you may be using compiled kernel and device blobs, right?
Sorry for the off-topic; if further conversation is needed, I'll write you a PM instead.

Thanks again :)

Nope! Im just porting Roms right now. Which is to say, i'm taking Roms already built for other devices with the same SOC (MT6582 in this case) and doing whats needed to convert them to run well on the A7600-F.
 

Almironi

Member
Oct 20, 2013
38
15
No bugs so far, aside from weird background noise - every time I click something, like a playing audio file but with no sound for 3 seconds, speaker goes on and off..
 
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coucout

New member
Dec 5, 2017
4
2
/sdcard is not well mounted

First, thanks for your greeeaaat job !!! I've beginning to install 6.01 and now i try this version 7.1.2?

I've an error with quasi all apps i've installated (ex : EZ Pdf reader, SyncDrive). The error is /sdcard doesn't exist or "cannot access /sdcard". The integrated file explorer within the rom itself cannot open (no error message)

And, indeed, with ES File Explorer, when i click on /sdcard, it show an error...
 
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Srisri7

Member
Jul 8, 2017
35
3
Yes, I have this error too. If I try to download a file with chrome, it can´t because there is no sdcard
It happened to me.. Try another browser

---------- Post added at 05:17 PM ---------- Previous post was at 05:14 PM ----------

No bugs so far, aside from weird background noise - every time I click something, like a playing audio file but with no sound for 3 seconds, speaker goes on and off..
Yeah.. This is happening to me also.. I have tried various mods but couldn't solve it.. And also there is too much distortion when volume is high..
 

SaberShip

Senior Member
May 15, 2017
54
63
First, thanks for your greeeaaat job !!! I've beginning to install 6.01 and now i try this version 7.1.2?

I've an error with quasi all apps i've installated (ex : EZ Pdf reader, SyncDrive). The error is /sdcard doesn't exist or "cannot access /sdcard". The integrated file explorer within the rom itself cannot open (no error message)

And, indeed, with ES File Explorer, when i click on /sdcard, it show an error...

Seems like the usual storage bug, I've run into this as well, I'll work on a fix and release an update soon hopefully.
 

SaberShip

Senior Member
May 15, 2017
54
63
Port Revision 2

Updated the ROM to hopefully fix the storage issues. Check the OP for full changelog/download link
Please test and let me know if it helps!
 
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szelezola

Member
Dec 12, 2010
6
4
Internal storage error

Updated the ROM to hopefully fix the storage issues. Check the OP for full changelog/download link
Please test and let me know if it helps!

THX for the fast error fixes, but the internal storage error is still exist (in chrome /sdcard doesn't exist or "cannot access /sdcard". The integrated file explorer within the rom itself cannot open (no error message), when connect the tablet to the computer, no internal storage space). In TWRP when connect, the internal storage exist, you can copy files.
 
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SaberShip

Senior Member
May 15, 2017
54
63
THX for the fast error fixes, but the internal storage error is still exist (in chrome /sdcard doesn't exist or "cannot access /sdcard". The integrated file explorer within the rom itself cannot open (no error message), when connect the tablet to the computer, no internal storage space). In TWRP when connect, the internal storage exist, you can copy files.

Thanks for the info. Strange, mine seems to work just fine. Iv'e tried from Chrome, built in storage manager, other storage managers, and over USB. They all seem to work fine for me.

Have you ever wiped data AND internal storage with TWRP? Perhaps the TWRP I ported isn't properly formatting the internal storage, this is one thing I haven't done since having stock on my tablet. I'll try it soon.
 

szelezola

Member
Dec 12, 2010
6
4
Thanks for the info. Strange, mine seems to work just fine. Iv'e tried from Chrome, built in storage manager, other storage managers, and over USB. They all seem to work fine for me.

Have you ever wiped data AND internal storage with TWRP? Perhaps the TWRP I ported isn't properly formatting the internal storage, this is one thing I haven't done since having stock on my tablet. I'll try it soon.

Yes I do, format-wipe everything (internal storage to). I use the TWRP in your OP message.
 

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  • 11
    Hello to all you Lenovo A7600-F owners! I've Got yet another Android Nougat ROM ported to the Lenovo A7600-F Tablet! This one is very stable, smooth, and has the least bugs of any ROM i've ported to the A7600-F. :D


    Android Version: AIM OS v2.5 (Android 7.1.2)
    Security Patch Version: November 6, 2017
    Kernel Version: 3.4.67 (kk)


    First of all special thanks to:
    -The AIM OS ROM team
    -S M Nahid Emon (From romclaims.com for the portable MT6582 ROM)


    Working:
    -Wifi, Bluetooth, Root, Storage, etc...
    -Camera (Pictures, Video)
    -Youtube (Up to 720p30)
    -Substratum Themes (Latest OMS Themes work great! Still smooth!)
    -FM Radio :cool:
    -GPS!


    Not Working (kind-of):
    -Camera video recording is laggy on default settings.
    -FM Radio in loudspeaker mode (It only works in headphone mode)
    -Let me know if you find something else.


    Installation:
    -Step 1: Don't download this ROM, I recommend you try this ROM instead. It is also ported by me but has far fewer bugs and has newer patches. Over a year later, I still see people installing this ROM ): Do yourself a favor and try out the newer one.

    -Download Rom
    -Download Gapps
    -Backup your current ROM
    -Flash ROM using TWRP 3.x.x.x
    -Flash Gapps
    -Reboot


    Notes:
    -To get brightness to change, turn off Adaptive brightness.
    -Substratum seems to work best with root enabled (in Developer Settings) and after a reboot.


    Downloads:
    -TWRP Download
    -ROM Download
    -GAPPS Download (Choose ARM - 7.1 - pico or nano)


    Emulated Storage Fix:
    -For those of you who have wiped/formatted "Internal Storage" with my TWRP recovery, you will likely not have proper access to internal storage in this ROM. If you have internal storage issues try to flash this boot image to /boot with TWRP's builtin .img flash utility. Download storage fix image here.

    Kernel Source: here

    Changes:
    -Revision 2:
    Fix Storage issue (For people with physical internal storage).
    Update Launcher to new Pixel Launcher 8.1 4429924
    Removed unnecessary service startups related to SIM/Modem
    8
    [Guide][7.1.2][Install AIM OS v2.5 on Lenovo A7600-F [MT6582] without messing up inte

    At first I thought I should make a new thread here in the forum, but then I thought, I rather stay in this thread. Thats why the text still looks like a new forum thread, but I thought I will just leave it this way.
    After two days of testing and flashing and going back and forth, I finally have my good old Lenovo A7600-F running perfectly on AIM OS 2.5 / Android 7.1.
    I also had the problem of the messed up internal storage, and thus a pretty useless Tablet. And no solution to be found. But I finally did it.
    Thank you all here.

    [Guide][7.1.2][Install AIM OS v2.5 on Lenovo A7600-F [MT6582] without messing up internal storage

    First:
    The original thread for the AIM OS can be found here.
    https://forum.xda-developers.com/android/development/rom-aim-os-v2-5-lenovo-a7600-f-t3713308
    Thank you so much man!

    Second:
    I have taken a lot of knowledge and parts of this guide from thel2dab`s CM13 Thread.
    https://forum.xda-developers.com/android/development/lenovo-a7600f-original-cm13-port-t3515459
    Thank you man!

    Third:
    - I hope you understand that all of these operations can and will render your device unusable, if you don't know what you are doing. So backup all your data beforehand, and be aware that anything can happen anytime.

    - I AM NOT RESPONSIBLE FOR ANY DAMAGE THAT IS CAUSED BY ANYTHING STATED IN THIS GUIDE.

    - It is REALLY important to use EXACTLY the files stated here in my guide (NOT ALL THE FILES FROM THE OP ARE WORKING FOR MY GUIDE!) and closely follow every step given. Especially when told to remove or insert SD Card, i really mean it, so do it please.

    Preparations:

    You need the following files, it is best to place them all on a suitable micro SD.

    Download the ROM Here:
    Android Version: AIM OS v2.5 (Android 7.1.2)
    Security Patch Version: November 6, 2017
    Kernel Version: 3.4.67 (kk)
    https://drive.google.com/file/d/1EjVkf-_w5_N46uMj-5y1bvHDs0pmQPDA/view?usp=sharing
    Thanks to Sabership!
    https://forum.xda-developers.com/android/development/rom-aim-os-v2-5-lenovo-a7600-f-t3713308

    Download TWRP here:
    A7600F TWRP 3.0.2.0
    https://goo.gl/77toHX
    Extract the recovery.img to your SD card, as flashify can't handle compressed archives!
    As a short remark: it is very important to use 3.0.2, as the TWRP v3.1.0 from OP always rendered my internal storage completely useless, which was not fixable. This TWRP comes from thel2dab`s CM13 Thread, see link on top).

    Download the Google basic Apps here:
    (Choose ARM - 7.1 - nano)
    http://opengapps.org/

    Download "Emulated Storage fix" boot-image by SaberShip here:
    https://drive.google.com/file/d/1DMcMmDXlXlQHkZlxFrMzoQoLmoAHYWAe/view

    Download Kingroot App
    http://beste-apps.chip.de/android/app/kingroot-apk-android-app,cxo.94586052/
    (apk, for obvious reasons not to be found on Google Play)

    Download Flashify App
    https://www.apkmirror.com/apk/chris...-release/flashify-1-9-2-android-apk-download/
    (apk, just for convenience later, you can also download it from google play)

    Preparations 2:

    You need to have stock Lenovo android 4.2.2. or 4.4.2 installed.
    If you have previously messed up your internal storage (=not showing up in android at all), there is no way to restore it, except flashing said stock Lenovo android 4.2.2. or 4.4.2 .
    (Instructions and files: http://www.thecicc.com/video/Nt3RQgmQeRY.html)

    So thats the basic we will need here. Let's begin.

    1. Rooting The A7600F

    From 4.4.2 and 4.2.2 this can be done easily with the KingRoot app.
    Simply download Kingroot App wherever available, let it run, inside look for the menu button to make it do the root process. This will take some minutes! (There are other methods to gain root access, but this is by far the easiest, so I will not go into further details here)

    2. Installation Of Custom Recovery

    You must have a custom recovery installed. I have only tried this ROM with TWRP. This is the version I have been using: A7600F TWRP 3.0.2.0 by thel2dab

    2.1 Install Flashify App on your Tablet, start it and flash the TWRP 3.0.2 recovery.img as recovery image.

    2.2 Shutdown the tablet.

    3. Installation Of Custom OS / Rom

    3.1 Press and hold "Volume up" button and simultaneously press and hold Power-button, wait for the small menu to appear. With "volume up" key, choose "recovery", with "volume down" key confirm. Now the Tablet boots into the TRWP recovery System.

    3.2 Now VERY important: TWRP will ask you, if it should leave the internal storage locked or if it should open it up.
    ----- MOST IMPORTANT STEP: TELL TWRP TO LEAVE THE STORAGE LOCKED AND UNTOUCHED!

    3.3 Then go to wipe. Go to advanced wipe. Select and wipe only the following and nothing else:

    Dalvik/ART Cache
    Data
    Cache
    System

    3.4 Return to the main menu. Go to install.
    Select the ZIP file: AIM OS v2.5 N_7.1.2 A7600F Revision 2
    Add additional zip open_gapps-arm-7.1-nano-20180115.zip
    Install the whole load. This can take a while.

    3.5 Once finished hit wipe Dalvik/Cache

    3.6 REMOVE YOUR SD CARD FROM THE TABLET

    3.7 Hit reboot. Hopefully it boots past the original Lenovo screen. When you see the swirling colourful dots, the system is booting fine. The 1st boot can take a up to 10 minutes!

    Now despite what all the images and people say, your internal storage (as the Android sees it) will appear to be messed up unusable at this point (meaning no internal storage showing up in android, and file manager crashing right upon starting it).
    Well, dont fear, the storage is fully intact, but the OS can't handle it this way, as Lenovo handles the internal storage a bit differently than most other manufacturers.
    So: just one more step and we are done, we only need to install the fix for that, so the OS can handle an emulated internal storage.

    3.8 Shutdown the tablet.

    4. Install Emulated Internal Storage Fix:


    4.1 INSERT YOUR SD CARD AGAIN (for it should contain the Emulated storage fix boot_emulated_storage.img by Sabership)

    4.2 Boot into recovery mode again.
    [[Press and hold "Volume up" button and simultaneously press and hold Power-button, wait for the small menu to appear. With "volume up" key, choose "recovery", confirm with "volume down" key. Now the Tablet boots into the TRWP recovery System.]]

    4.3 Go to install, on the bottom right button change to "install image" and choose boot_emulated_storage.img to flash to "boot" sector.
    Should only take a few seconds.

    4.4 When done, REMOVE YOUR SD-CARD AGAIN FROM THE TABLET.

    4.5 Reboot the tablet.

    4.6 Open file manager to check if everything worked out fine.

    If it opens up and shows something like "Lenovo A7600-F" with about 9,3 GB space left, everything went perfect, and your "brand new" Lenovo Tab is good to go with its flashy new Android 7.1 system.
    If no internal storage is shown, or if the file manager immediately crashes upon opening, something went wrong, and there is really nothing that can fix this. I tried for hours. Then you need to start from the very beginning by flashing stock Lenovo Android using SP Tools.
    2
    Ok cool! Thanks for that. I'll give it a try.
    Anyway, given that you're trying to build RR as well... may I ask you where to find this needed stuff? I mean, I'll download the sources from Lenovo (which are for KitKat, according to their website); but you're not using these sources for RR and Nougat, right? Where can I find the sources you are using? Ahh or you may be using compiled kernel and device blobs, right?
    Sorry for the off-topic; if further conversation is needed, I'll write you a PM instead.

    Thanks again :)

    Nope! Im just porting Roms right now. Which is to say, i'm taking Roms already built for other devices with the same SOC (MT6582 in this case) and doing whats needed to convert them to run well on the A7600-F.
    2
    i didn't find anything useful there.. Can you please give me exact link for updated rom for A7600-H?
    -Resurrection Remix 5.8.8 (08.02.2019), Android 7.1.2
    https://4pda.ru/forum/index.php?showtopic=724424&view=findpost&p=82250174

    -Resurrection Remix-O 5.8.5 (23.07.2018), Android 7.1.2
    https://4pda.ru/forum/index.php?showtopic=724424&view=findpost&p=66173148

    - Other ROM
    https://4pda.ru/forum/index.php?showtopic=724424&view=findpost&p=72820919
    1
    I've switched places now to SD card but I ran out of battery so need another 30 min, then I'll give it a final try. ( OT. This old plate belonged to my mother who's passed so that's why it's important to me to make it work).