How to flash Android 6.0 Marshmallow on Galaxy S

 
Now you can get the latest Android 6.0 Marshmallow firmware on your Galaxy S I9000 device. Thanks to sooti, an Android developer at XDA, the OmniROM is now available for the device that will take the firmware to the latest available Android firmware. Though the ROM is unofficially supported and has some bugs, some stability improvemets and bugs fixes have been brought with new builds.

Install the recommended Google apps as other Gapps may cause heavy slowdowns or failure due to lack of space. These Gapps removes most of the bloat including browser, camera, wallpapers and more thus leaving core apps alone. Moreover, permissions needs to be fixed and it may take some time. If you can’t wait, then you can force reboot when it tries to set permissions. However, it’s recommended to wait.
Once you install the ROM and Gapps successfully, set overclock to 1400 mhz and minimum to 200 in order to avoid some lagging. Then reboot after setup is complete to clear some memory that wizard uses and caches. Remember, adjusting clock speed requires root access. Flash the SuperSU package listed in the download section to gain root.
Let’s begin with the tutorial.
Warning: Warranty may be void if you root or install custom ROM on your device. We at DroidViews won’t be liable for any damage to your device whatsoever. We won’t be held responsible if you brick or damage your device. Reader’s discretion is advised.

Bug Alert

What’s Working:RIL
  • Wifi
  • BT
  • Sensors
  • GPS
  • Camera (use third party such as open camera
  • Internal SD (using data partition for now since we need to add a commit to emulate the full storage partition)
    Audio + vibrate
  • Buttons (except home to wake, I need to add that but it does go to home screen, just use power to wake for now)
  • USB storage (Make sure you disable debug mode when you use it since it causes issues mounting it sometimes)
Not Working:
  • SELINUX (disabled for now until I add permissions but its low on my priority right now)
  • External Storage (SD), causes bootloops

Downloads

  • Unofficial OnmiROM based on Marshmallow for Galaxy S
    • OmniROM 6.0 — Download | File: omni-6.0-20151206-galaxysmtd-HOMEMADE.zip
  • Marshmallow compatible Google Apps
    • Recommended Google Apps — Download | open_gapps_galaxysmtd.tar.gz
  • Root with SuperSU
    • SuperSU v2.52 — Download | File: BETA-SuperSU-v2.52.zip

Requirements

  • The listed custom ROM is compatible with Galaxy S I9000 device only.
  • Make sure you have TWRP recovery installed on your device. Download and install the latest TWRP build.
  • You must have device drivers installed on your PC so as to transfer the ROM and Google apps to your device’s storage. Download here.
  • You must fully charge your device or at least to 60%, as the process may take a while.
Backup your Apps and Data
Before you proceed, make sure you backup all your data. This process will wipe all the data from your device except for the internal storage. Hence, a full backup or nandroid backup is recommended. Also backup all your internal storage files just in case anything goes wrong. Take a nandroid backup from the custom recovery before flashing the ROM.

How to Install Android 6.0 Marshmallow on Galaxy S with OmniROM

  1. Download the OmniROM 6.0 from the download section. Also download the compatible Google Apps from the link. Extract the Gapps and place them in the device’s internal storage.
  2. Now transfer the zip files into your device’s internal storage. Place the zip files where you can easily locate it.
  3. Now reboot into Custom Recovery (like TWRP). To boot into TWRP, first turn off your device and then press and hold volume down and power keys at the same time. If you see the TWRP logo, that means you have successfully booted into the recovery.
  4. It’s highly recommended that you perform a nandroid backup. To backup your ROM, tap on backup option in TWRP and select all the partitions including System, Data, Boot, Recovery, EFS and swipe right where appropriate, to backup.
  5. After performing the ROM backup, change the file system to f2fs and perform a full wipe. To do so, return to the TWRP main menu and tap the wipe button and select Advanced Wipe. Check the box for “data” and tap “change or repair file system”. Now tap “Change file system” and select “F2FS”. Now perform a full wipe by selecting  Dalvik CacheSystemData, and Cache. Now swipe the confirmation button to wipe.
  6. Now go back to the TWRP main menu or home screen and tap on the install option. Navigate to the ROM file and select it.
  7. Swipe the confirmation button to proceed with the installation. The ROM will be installed.
  8. Now return to home in the TWRP and tap on the install option. Navigate to the Google apps zip file and select it.
  9. Swipe the confirmation button to proceed with the installation.
  10. Similarly flash the SuperSU package for root access
  11. Once installed, reboot to system.
If the Google apps fail to install, then flash using Odin software. Look at any of our Samsung tutorial for reference. If you see the new boot logo, that means you have successfully installed the ROM on your device. If you come across any boot loop or face system errors, try a factory reset from the recovery or you can always restore your previous ROM from the backup.
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