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Samsung Galaxy J7 (samsung-j7elte)

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Revision as of 06:53, 16 November 2022 by KrakinTheKonsole (talk | contribs)
Warning WARNING: There is no package or repo published for this device yet. Please keep that in mind
This device is marked as not booting.
Status: Kernel compiles but failes to start
Samsung Galaxy J7
no photos yet
no photos yet
Manufacturer Samsung
Name Galaxy J7
Codename samsung-j7elte
Released 2015
Hardware
Chipset Samsung Exynos 7580 Octa
CPU 8x ARM Cortex-A53 @ 1500 MHz
GPU ARM Mali-T720 MP2 @ 600 MHz
Display 720x1280 SuperAMOLED
Storage 16 GB
Memory 1.5 GB LPDDR3
Architecture aarch64
Software
Original software Android 5.1.1(Upgradable to 6.1)
postmarketOS
Category testing
Pre-built images no
postmarketOS kernel 3.10.108


Contributors

Users owning this device


Development status

Sources used

Lineage OS kernel sources for Exynos 7580 Devices

Compiles

  • Linux kernel 3.10.108
  • Device information

What's working

  • Making a PMOS Recovery zip
  • Flashing using custom recovery
  • Showing splash screen during boot
  • Using debug-shell hook to boot into a working ssh user session.
  • Starting partiall X-Session and using the UI with USB-OTG Keyboard and Mouse

What's wrong

  • When the phone boots it shows the splash screen meaning the rendering is working. But it crashes and force reboots soon after. - This is probably caused due to the fact that the init is messed up because the bootloader passes the wrong kernel arguments. The ones that are used to boot android.
  • Being unable to mount the system partitions in TWRP to check logs or modify the system. - This is a common issue in many PMOS builds.

How to enter flash mode

Power down the device first.

ODIN/Heimdall Mode

To enter ODIN/Heimdall flashing mode, press and hold Power + Home + Volume Down buttons until a warning screen pops up. Then press Volume Up button to enter ODIN mode.

Recovery (Stock/Custom) Mode

To enter Recovery (Stock/Custom) mode, press and hold Power + Home + Volume Up buttons until the Recovery splash screen pops up.

Installation

Perform the standard installation method provided by PostMarket OS Installation Guide

But keep in mind that...

Warning WARNING: Installation with Heimdall partially works. It is recommended to use the custom recovery method provided by PMOS Wiki to install it.
Note Remember to add these packages into the rootfs when asked in 'pmbootstrap init' :
  • mkbootimg (For building boot images)
  • msm-fb-refresher (Required for other DEs to render properly).

See also

Lineage OS kernel sources for Exynos 7580 Devices

Samsung J7 T-Mobile device page