- Title: Proton KK AOSP
- Listed: July, 2015
- Last modified: 10/22/2017 3:25 am
- Version: 1.0.2 (4.4.2)
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Member Info
DESCRIPTION
This is a custom KitKat rom for Lenovo A820 compiled from source.
It took me a lot of time to get it to this stage, so if you're porting to another device or do some mods, please have respect and give proper credits to original author.
Update 22.10.2017
Added patch for WPA2 vulnerability. Install from recovery, then wipe cache and dalvik. Reboot.
Key features:
- Proton Settings page with useful options:
—– Vibrate on call connected
—– Low battery sound
—– Low battery dialog
—– Volume keys control text cursor
—– Home key unlock
—– CM11 battery indicators
—– Button backlight control
- Fixed vulnerabilities
—– FakeID
—– ObjectInputStream Serialization
—– Settings PendingIntent
—– GraphicsBuffer Overflow
- Adjusted 3G signal indicators levels
- Improved battery life
- Battery tables from S150 exctracted with "reverse-engineering"
- Unlinked volume sliders and expandable volume dialog
- init.d script to control GPU frequency, voltage and DVFS
- kernel compiled with linaro 4.9.3 toolchain, ROM compiled with SaberMod 4.8
- UI mods for statusbar icons
- Extended power menu
- Working GPS/EPO/A-GPS
- init.d support
- Calculator, Apollo, DSP Manager, Browser from CM11 (compiled from source)
- Camera shoots in MP4 format. Increased photo quality to 100%.
- Fullscreen caller picture
And many more improvements…
ART is not working, so it is disabled. Could not solve this problem.
For full kernel changelog, visit my github repo: https://github.com/infraredbg/Lenovo_A820_kernel_kk
GPU overclock (works on some A820):
Currently it is only supported via init.d script
Go to /system/etc/init.d and open 00proton with a text editor
Uncomment and change desired value (all values are explained in the script)
Save and make sure the file has correct permissions
Reboot device
You can verify if the GPU frequency have changed in /proc/gpufreq/gpufreq_var_dump
Installation:
If you're currently using one of my DEV roms, it is recommended to do a clean install
It is recommended to use my TWRP 2.8.4.0 recovery (install via Rashr from PlayStore on phone or from FlashTools on PC)
Copy zip on sdcard and optional GApps package and reboot to recovery
Do a full backup of your current ROM including nvram block (IMPORTANT)
Wipe system, data and cache from TWRP. The script does not do automatic format.
Install ROM zip and GApps (optional)
Reboot system (first boot takes time)
Credits:
jwchen for helping me with kernel and testing
hyperion70 for the hint how to fix gralloc mem leak
masterwasome for guides on xda
varunchitre for some initial work on mt6589 kernel
faux123 for dynamic filesync
Christofer83 for prebuilt linaro toolchain
superdragonpt and Dr-Shadow for valuable code which I learned a lot from
mastersanta for finding how to fix USB mounting problem in the beginning
CM11 team
all other people for their guides and information, which I've found over the net
Update:
Uploaded new version of the zip with fixed IMEI backup. Sorry for inconvenience, but that's why I have written in the description to make a full backup.
※Please make a backup of your device before installing or updating ROM
Where can I find the Lenovo Kitkat upgrade mentioned in the the tutorial for flashing Proton KK ?
I am trying to flash the Proton KK but I can't find the Lenovo stock files mentioned in the tutorial. Can I use the S147 stock instead of S139 ?
I am not sure if I found a chinese only A820_S139, if there is such. The title and packed pdf are in chinese.
The files A820_S139 and the Kitkat upgrade are not available here on Needrom. I have tried to Google them but with no luck except
the A820_S139 file I mentioned above. Where did you guys find those files ?
It would be great if somebody could help me with download links.
Cheers
Where can I find the Lenovo Nougat upgrade ???
This ROM hardly will get any update due to the kernel vulnerabilities (Meltdown, Spectre, etc). According to Intel the recent problem concerns practically all CPU's! What kind risk it is to use the phones with non-updated kernels. The problem is not only with this phone and this ROM, there are (and will be for long time) m/billions of old phones in use which will not get any update. Should we throw these phones to a junk pile and move back to a letter coorrespondance?
AFAIK Big part of Meltdown only afffects Intel CPUs, so the ARM chipset used in A820 is not affected.
Spektre affects many vendors, but again our ARM chipset is not affected.
From linux kernel commits: "Cortex-A57, A72, A73 and A75 are susceptible to branch predictor aliasing and can theoretically be attacked by malicious code." MT6589 is Cortex-A7.
@indianrapists There's no Lenovo Nougat update. Newest official firmware for this phone is JellyBean 4.1.2.
Some more insight from RPi: https://www.raspberrypi.org/bl.....re-or-meltdown/
Hi. Is there a regular possibility to prevent some applications from being unloaded from memory?
Good rom
I don't want root, how to fully unroot?
SuperSu app has Full Unroot option in Settings, but I haven't tried. Might work.
hi! can this ROM be installed at the resized memory, or i have to remap it back to factory sizes? thx
Yes, no need to reset to factory partitions.