Note
- Formatting data with PE recovery is REQUIRED for clean flash
- DO NOT use any other recovery
- The firmware is included with a different keymaster.img from perseus. DO NOT flash your own firmware.
- Keymaster is bumped to 4.0 for encryption, and cust partition is mounted as /metadata. You WILL NOT be able to boot TWRP on PE 12.1. OrangeFox R11.1_1 or newer can boot but is not capable of decrypting the data partition.
- To switch to other ROMs, format data in PE recovery first, and then install another recovery. You may need to re-flash the required firmware, if the ROM you are going to flash does not include one.
- You can dirty flash from my previous PE 12 / 12.1 builds. You can dirty flash the Plus edition on top of PE 12 / 12.1 regular builds.
- You cannot upgrade from android 11 directly. Formatting data is required.
PE recovery flash guide
- Download PE recovery from the official PE website
- Boot your phone into fastboot mode. You can either
- hold power + volume down button
- or
adb reboot bootloader
- or use the
Reboot to bootloader
option in TWRP/OrangeFox
- Connect your phone to a computer
- Run
fastboot flash recovery pe_recovery_file_name.img
in your cmd/powershell/terminal - Hold power + volume up to boot into recovery
PE 12.1 flash guide
- Boot into PE recovery
- Select
Factory reset" --> "Format data/factory reset
. You phone should say that /data, /cache, and /metadata have been formatted. - Go back to main menu and select “Apply update” –> “Apply from ADB”
- Connect your phone to a computer
- Run
adb sideload pe_rom_file_name.zip
in your cmd/powershell/terminal and wait until it finishes - Reboot to system
Device Specific Changes
- Etude kernel: Op.12 No.3
- Linux 4.9.315
- fixed a potential out-of-bound read in lz4
- enabled ARMv8.1-a LSE atomics
- fixed and optimized spectre-v2 mitigation enable logic for kryo385
- DO NOT use another kernel. Just don’t.
- Brought WfdCommon and IFAA back in tree and enabled generic mouse input for Qualcomm’s WiFi Display
- Switched back to GL for HWUI renderer (from Vulkan)
- display artifacts when playing videos in some apps should be fixed
- Moved to qcom’s unified USB init scripts
- Used the cgroup and task_profile configs from system directly
ROM Side Changes
- May security patch
- Added and fixed a few APN configs
- Fixed the battery widget for supported Bluetooth devices
- Fixed the rotation button for 2-button navbar mode
- Plus edition:
- Fixed the statusbar brightness control
- Reverted white QS background to the default AOSP style
Please report issues to jjpprrrr.