[G4 General] sdembiske:
AICP 13.1 Oreo (O) H811 rom on the H812 - Recommended to try!

AICP Homepage

: [G4][13.1][TITAN] ~ AICP ~ [H815][H811][UNOFFICIAL]

Just some thoughts on installing and using the H811 AICP 13.1 Oreo rom (downloaded from the link in the OP on the AICP 13.1 homepage).

Note

: If installing the H811 rom on the H812, You

do not

have to remove the top Assert line in the Updater Script – it’s not there (in the July 12th H811 upload on), so don’t worry about it

1st & foremost, do a TWRP backup of your current installation. Also, remember to backup your external data (e.g., photos on SD card etc,), separately plus your SMS messages (Titanium Backup, SMS Backup & Restore or whatever), as you have to wipe ‘System’.

If you do not have the latest TWRP official or preview version for Oreo installed, flash it, before proceeding.

Before starting the actual rom installation in TWRP, wipe

System

, Cache & Dalvik,

format Data

, then install the rom, gapps, preferred root (Magisk is the supported method), Xposed if desired (I haven’t experienced any issues with it as yet).

Note

: I did not flash the H812 UsU baseband zip or my MM modem (I had previously flashed it though) or install any specific H812 UsU kernel and have experienced no issues to date by not doing these steps.

Coming from LineageOS 15.1 Oreo, I am very impressed with the performance and stability of this rom. It seems to me to combine the best of the AOSCP N and LineageOS O roms, and it has Privacy Guard included, a big plus in my book as I can extend some battery life (in addition to having Greenify and Amplify installed), by turning off Keep Awake in Google Play Services and Google Services Framework and other apps as well as limiting some that I don't need to Run In Background or load on Bootup. Find it in Settings > Security and Privacy > Trust > Privacy Guard > touch the 3 dot menu in the top right of the screen and select Advanced.

Another plus: exFAT formatted SD cards are supported.

The camera, unfortunately still has some of the LineageOS 15.1 issues: video recording in the app does work for 720p and 1080p but does not work at all for UHD 4K[/U] (the setting it loads to on install - it has to be changed in the settings gear icon in the app as it indicates cannot connect to camera for video recording but it does work on the UHD 4K setting for camera pictures). Video play in YouTube in 1080p 60fps still lags/freezes and has buffering issues with longer plays. My go-to camera app is still Camera FV5 Lite and Cinema FV5 Lite for video recording. Frankly, I have yet to find an app from Play Store or any of the modded Google camera apps to give me a better quality picture or better video recording than the FV5's.

Note

: Oreo 8.1 higher resolution (up to 1080p 60fps) Video Play workaround for You Tube videos, etc. refer to post # 1264

Note

: Battery life seems very good so far (improved even more from the Sept. 17th upload on, making it the best currently of the custom roms). I have not had to date any issues with sim card not being recognized on boot, nor have I had to reboot once to obtain a connection ([U]Note[/U]: the ril issue has been resolved now to allow achieving Official status from the Sept. 20th upload on). Note: the proximity sensor is off by default in the July 12th build, turn on Prevent accidental wake-up, in Settings > Display > Advanced otherwise you will experience random system app wakeups/firings (battery saver, airplane mode, do not disturb, Bluetooth, etc.) and much heavier battery drain..

There appears to be only a few lingering issues at this point in time: Bluetooth calling sound distortion, torch functioning and selinux still being permissive (will be fixed when all bugs are solved in order to qualify for eventual Official status - indicated now as achieving Official status from the next upload after Sept. 20th).

Bonus: Security patch level is September 5th 2018 as of the September 20th '18 release.

Extra considerations

:

- Save wear and tear on your device hardware - No button presses needed to boot TWRP or Fastboot quickly & directly: Refer to post # 368

Big thanks to [MENTION=5545101]steadfasterX[/MENTION], [MENTION=5461026]kessaras[/MENTION], [MENTION=8699949]ThePiGuy[/MENTION] and all the Android Ice Cold Project (AICP) team.