Samsung Galaxy Tab A 8.0 (2019) (samsung-gtowifi)

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Samsung Galaxy Tab A 8.0 (2019)
Manufacturer Samsung
Name Galaxy Tab A 8.0 (2019)
Codename samsung-gtowifi
Released 2019
Type tablet
Hardware
Chipset Qualcomm Snapdragon 429 (SDM429)
CPU Quad-core 2.0 GHz Cortex-A53
GPU Adreno 504
Display 800x1280
Storage 32GB
Memory 2GB
Architecture aarch64
Software
Original software Android
Original version 9
Extended version 11
postmarketOS
Category testing
Pre-built images no
Mainline no
postmarketOS kernel 4.9.227
Features
Flashing
Broken
USB Networking
Internal storage
Works
SD card
Works
Battery
Partial
Screen
Partial
Touchscreen
Works
Multimedia
Audio
Broken
Camera
Broken
Connectivity
WiFi
Works
Bluetooth
Broken
GPS
Broken
Miscellaneous
FDE
USB OTG
Sensors
Accelerometer
Ambient Light
Haptics
Works


Note If you have ever installed, or if your device shipped with, stock firmware newer than T290XXU3CVG3, you cannot use custom firmware as Samsung locked the bootloader down.

Contributors

  • Irihapeti
  • Oatm22

Users owning this device


Known problems with this port

  • On LightDM, the desktop won't work until you disable logind-check-graphical in /etc/lightdm/lightdm.conf. (see Display manager#CanGraphical_issue)
  • Battery capacity doesn't update.
  • Device now kernel panics when connected to USB. Likely related to USB networking.
  • Networks are detected, but nmcli and nmtui say "Secrets were required, but not provided" if you try connecting to an encrypted Wi-Fi via terminal even with the correct password. Most likely it's NetworkManager's fault or a service that didn't start.
  • SD card has to be mounted manually via terminal.

Download mode

  • Turn off the device.
  • Plug in a USB A to Micro-USB Data cable from a PC to the tablet while holding down both volume up and down buttons, releasing the buttons when the screen turns on.
  • Press the volume up button to start flash if you get the confirmation screen. If not, reboot and try again.

Volume up is located right under the power button.

Installation

Note You can replace mmcblk0p69 with mmcblk0p63 to flash to your system partition instead and keep your Android data, and return to Android from a system partition backup later. Beware that you risk your data partition becoming irrecoverably corrupted by anything running in pmOS if you do this (Has happened with KDE Plasma).


Run pmbootstrap install, then pmbootstrap export.
Transfer the exported files to the device using your preferred method. (e.g. microSD, USB OTG, adb push)

Start TWRP and do the following

  • Wipe System and Data partitions.
  • Flash boot.img to Boot.
  • Go to Advanced > Terminal and run dd if=samsung-gtowifi.img of=/dev/block/mmcblk0p69 and be patient. Make sure you adapt the input file to wherever you copied it to.
  • Reboot. TWRP may give an OS undetected warning, which can be ignored.

/dev/block/mmcblk0p69 (data) and /dev/block/mmcblk0p63 (system) are the only partitions this will work in. You may brick your device if you enter the wrong partition.

See also


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