Amazon Echo Show 8 (amazon-crown)
Appearance
| This device has been tested with postmarketOS, but its device package has not yet been added to the postmarketOS repositories. This means that it cannot be selected in pmbootstrap. |
|
Echo Show 8 with the weather displayed on it's screen | |
| Manufacturer | Amazon |
|---|---|
| Name | Echo Show 8 |
| Codename | crown |
| Model | C7H6N3 |
| Released | 2019 |
| Type | embedded |
| Hardware | |
| Chipset | MediaTek MT8163 |
| CPU | Quad-core 1.3 GHz Cortex-A53 |
| GPU | Mali-T720 |
| Display | 1280x800 |
| Storage | 8 GB |
| Memory | 2 GB |
| Architecture | aarch64 |
| Software | |
Original software The software and version the device was shipped with. |
Android (Fire OS) 7.1.2 (FireOS 6.5.3.1) |
Extended version The most recent supported version from the manufacturer. |
Android (Fire OS) |
| postmarketOS | |
| Category | testing |
Pre-built images Whether pre-built images are available from the postmarketOS Installation page. |
no |
Mainline Instead of a Linux kernel fork, it is possible to run (Close to) Mainline. |
yes |
pmOS kernel The kernel version that runs on the device's port. |
6.18 |
Flashing Whether it is possible to flash the device with pmbootstrap flasher. |
Works
|
|---|---|
USB Networking After connecting the device with USB to your PC, you can connect to it via telnet (initramfs) or SSH (booted system). |
Works
|
Internal storage eMMC, SD cards, UFS... |
Works
|
Screen Whether the display works; ideally with sleep mode and brightness control. |
Partial
|
Touchscreen |
Works
|
| Multimedia | |
3D Acceleration |
Works
|
Audio Audio playback, microphone, headset and buttons. |
Broken
|
Camera |
Broken
|
| Connectivity | |
WiFi |
Broken
|
Bluetooth |
Broken
|
| Miscellaneous | |
FDE Full disk encryption and unlocking with unl0kr. |
Untested
|
USB OTG USB On-The-Go or USB-C Role switching. |
Broken
|
| Sensors | |
Ambient Light Measures the light level; used for automatic screen dimming in many interfaces. |
Broken
|
Contributors
Users owning this device
- R0rt1z2 (Notes: Unlocked with amonet)
How to enter flash mode
Your bootloader must be unlocked using amonet.
| Due to the nature of the bootloader unlock, only 1 GB of memory will be available. See #Only 1 GB of memory is available for more information. |
The unlock provides a hacked fastboot mode, which is the one you must use for flashing. Stock fastboot will remain locked because of how the exploit works.
To access hacked fastboot mode, you have two options:
- Run the
boot-fastboot.shscript from the amonet package.
- Hold the Mute button while booting, until you see
=> HACKED FASTBOOT mode...
To access TWRP / recovery mode, you can either:
- Run the
boot-recovery.shscript from the amonet package. - Press and hold Volume - and Mute while turning on the device.
NOTE: Because of the nature of the exploit, boot and recovery images require a microloader to be injected into the very first block. NEVER flash boot or recovery images from within the OS using tools like dd.
You MUST to use either HACKED FASTBOOT mode or TWRP to flash boot and recovery images, since they'll automatially inject the microloader if required. |
Installation
This device must be added to pmbootstrap before it can be installed.
Issues
Only 1 GB of memory is available
The bootloader unlock is accomplished by flashing an exploitable preloader, bootloader, and tee from the Amazon Echo Show 5 (amazon-checkers).
The preloader handles low-level hardware initialization during boot. Consequently, the preloader from the Echo Show 5 only initializes 1 GB of DRAM, which is the amount of DRAM available in the Echo Show 5.