Building and installing
There are multiple installation methods for your Samsung Galaxy A5 (2017). They all rely on flashing one or more partitions on your device.
All installation methods can lead to data loss.
Flashing a partition will erase everything on the partition. Additionally,
the common backups methods, e.g. TWRP, will not backup the
This will produce a folder with a flashing script, and the partition images for your Samsung Galaxy A5 (2017).
$ nix-build --argstr device samsung-a5y17lte -A build.android-fastboot-images
Alternatively, you can build a specific partition image:
$ nix-build --argstr device samsung-a5y17lte -A build.android-bootimg $ nix-build --argstr device samsung-a5y17lte -A build.rootfs
The device will need to be booted in its bootloader, or odin, mode.
The boot images can be installed using the following command, assuming the
android-fastboot-images output was used.
If you have a system image (
system.img) built, you can use
flash it to the device. Note that it might be too big to fit over the
partition. In such case, it can be flashed on the
$ heimdall flash --USERDATA system.img
Using a flashable zip
An alternative installation method is to use a flashable zip. The flashable zip can be built for your Samsung Galaxy A5 (2017) using one of the following commands:
$ nix-build --argstr device samsung-a5y17lte-A build.android-flashable-bootimg $ nix-build --argstr device samsung-a5y17lte-A build.android-flashable-system $ nix-build --argstr device samsung-a5y17lte-A build.android-flashable-zip
The first two will flash only a specific partition. The last one contains the partitions of the two previous one.
The zip can either be copied to the device and selected in a compatible
Android recovery, or sent to the device through
$ adb sideload /nix/store/eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee-flashable-samsung-a5y17lte-boot.zip
By default it will flash to the
system partition. Some configurations may
change this to flash to the
userdata partition. In that case, no warning is
given before flashing.
To force-reboot the device, hold
Volume Down +
Power for a couple
Volume Down +
Power during power-up will go to the Samsung
specific bootloader mode.
Volume Up +
Power during power-up will boot the recovery
Flashing system image
heimdall to flash
system.img, either on the
USERDATA or on the
SYSTEM partition seems to fail, for unclear reasons.
One can use TWRP to flash the partitions:
$ adb shell dd of=/dev/block/platform/13540000.dwmmc0/by-name/SYSTEM bs=8M < .../system.img $ # or $ adb shell dd of=/dev/block/platform/13540000.dwmmc0/by-name/USERDATA bs=8M < .../system.img