Featured image of post PixelExperience 13 / 13 Plus 20230501-1343 Official Polaris Build

PixelExperience 13 / 13 Plus 20230501-1343 Official Polaris Build

Kernel network fixes and driver updates, OSS aptX(HD) encoders, and April security patch.


  • PE recovery is REQUIRED
    • DO NOT use any other recovery
    • Partition scheme has been switched to retrofit dynamic partitioning because polaris is running out of system partition space. No actual re-partition is involved. Instead, the physical system and vendor partition is mapped together to form a logical “super” partition. The size of super partition equals the sum of the physical system and vendor partitions. After that, logical system and vendor partitions are created on top of this super partition. In this way, we are essentially redistributing space between the physical system and vendor partition to accommodate for the increase in size of system libraries and prebuilt apps.
    • The firmware is included with a different keymaster.img from perseus. DO NOT flash your own firmware.
    • 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 the previous PE 13 builds. You can dirty flash PE 13 Plus on top of the regular PE 13.
  • You cannot upgrade from android 12 builds. 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 13 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 in your cmd/powershell/terminal and wait until it finishes.
  • Reboot to system

Device Specific Changes

  • Etude kernel: Op.13 No.2
    • built with the latest LLVM Clang 16.0.2 stable
    • merged two network related fixes from android common kernel upstream
    • merged LA.UM.8.3.c25-07800-sdm845.0 into qcacld and qcacmn
    • stopped suppressing all unused argument warnings for clang and removed some arguments from the Makefile
    • DO NOT use another kernel. Just don’t.
  • Enabled WiFi Reg Changed event that was disabled in upstream by default.
  • Switched to the new open source aptX and aptXHD encoders in the BT stack.

ROM Side Changes

  • April security patch
  • Translation updates and other fixes

Known Issues

  • Qualcomm’s WiFi Display (WFD) works fine. However, if you have a saved WFD connection, you may see the screen cast logo appear in statusbar after a reboot. Just press disconnect from the screen cast QS tile if that happens.
  • If you enable bubble for app notifications, the translucent background may flicker when the bubble is activated.

Download | XDA thread

Please report issues to jjpprrrr.

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