Android

Overview and links

• Fastboot - part of ADK that allows you to interact with partitions with no ROM installed
  • Windows Drivers
  • or see here
• Nexus Root Toolkit
• ADK - Android Open Accessory Development Kit (part of SDK)
• ADB - Android Debug Bridge (part of SDK)
• TWRP (Team Win Recovery Project) to flash recovery partition
• SON/SOFF - security feature that stops any partition other than /data and /cache being written to. Custom ROM: writes to /boot and /system, possibly requires /data and /cache to be cleared.
• Open GApps - pico for minimal Google Play install
• Mounts2SD - allows internal partitions to be redirected to SD card storage
• Magisk Manager
• Enter Developer Mode: 7 clicks on build number

fastboot

• Enter fastboot mode on phone (eg power and down buttons)

Check device is visible:

fastboot devices

Unlock device:

fastboot oem unlock

Boot into recovery without flashing:

fastboot boot twrp-flo.img

Flash recovery:

fastboot flash recovery twrp-flo.img

Reboot:

fastboot reboot

Reboot into bootloader:

fastboot reboot bootloader

Wipe user data:

fastboot -w

ADB

ADB reference

To get a shell prompt:

 adb shell

Some useful things:

 adb reboot
 adb reboot recovery
 adb push c:\somerom.\zip /data
 adb pull /storage/sdcard0/DCIM/Camera/somepic.jpg c:\
 adb logcat

Set default install location to SD Card (0 -> internal)

 adb pm set-install-location 2

Format ext

 mke2fs /dev/block/mmcblk0p2

In recovery mode, mount SD card then:

 adb push c:\somerom.zip /sdcard/somerom.zip

Google/Asus Nexus 7 (flo)

Unlock/Lock bootoader:

• Hold down VolDown + Bixby while plugging in USB

Stock firmware:

• Download from Sam FW based on model number (G973F)
• Install Samsung USB driver
• Use Odin3 to extracted load files (AP, BL, CP, CSC)

Google/Asus Nexus 7 (flo)

• Use Nexus Root Toolkit to root device and install custom bootloader
• Root/unlock device
• Flash recovery: TWRP or Lineage Recovery
• Re-partition
  • Later Lineage OS (15+) need a larger system partition for OS and GApps
  • Can steal some space from cache partition to increase system from 827 MB to > 1 GB
  • Use syspart.zip from here (Further info on partitions)
• XDA Developer page
• Custom ROMs:
  • Official Lineage OS 18.1 (11)
• Install OpenGApps at same time as ROM, before reboot

Current Configuration

• TWRP 3.3.1
• ROM: LineageOS 17.1 20200501

Custom ROM Checks

Netflix can't be accessed from Play Store on unlocked device

• APKfrom APK Mirror
• Put in /Download
• install via APKMirror app from Play Store