Amazon Kindle 4 (amazon-yoshi)
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| 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. Status: Booting with serial console, manual flashing required | 
|  | |
| Manufacturer | Amazon | 
|---|---|
| Name | Kindle 4 | 
| Codename | amazon-yoshi | 
| Released | 2011 | 
| Type | ebook reader | 
| Hardware | |
| Chipset | Freescale NXP i.MX508 | 
| CPU | 800MHz ARM Cortex A8 | 
| GPU | ePXP+EPDC | 
| Display | 6-inch (150 mm²), 600 × 800 pixels, 167 PPI density, 16-level grayscale | 
| Storage | 2 GB | 
| Memory | 256 MB | 
| Architecture | armv7 | 
| Software | |
| Original software The software and version the device was shipped with. | Kindle OS | 
| Extended version The most recent supported version from the manufacturer. | Kindle OS | 
| postmarketOS | |
| Mainline Instead of a Linux kernel fork, it is possible to run (Close to) Mainline. | no | 
| pmOS kernel The kernel version that runs on the device's port. | 5.15-rc6 | 
| Flashing Whether it is possible to flash the device with  pmbootstrap flasher. | Broken | 
|---|---|
| USB Networking After connecting the device with USB to your PC, you can connect to it via telnet (initramfs) or SSH (booted system). | Broken | 
| Battery Whether charging and battery level reporting work. | Broken | 
| Screen Whether the display works; ideally with sleep mode and brightness control. | Broken | 
| Touchscreen | Untested | 
| Multimedia | |
| 3D Acceleration | Broken | 
| Audio Audio playback, microphone, headset and buttons. | Broken | 
| Camera | Untested | 
| Connectivity | |
| WiFi | Broken | 
| Bluetooth | Broken | 
| GPS | Untested | 
| NFC Near Field Communication | Broken | 
| Modem | |
| Calls | Untested | 
| SMS | Untested | 
| Mobile data | Untested | 
| Miscellaneous | |
| FDE Full disk encryption and unlocking with unl0kr. | Broken | 
| USB OTG USB On-The-Go or USB-C Role switching. | Broken | 
| Sensors | |
| Accelerometer Handles automatic screen rotation in many interfaces. | Broken | 
Contributors
- samcday
Users owning this device
How to enter flash mode
- Jailbreak your device by following the Kindle4NTHacking Jailbreak guide from MobileRead wiki.
- Follow the instructions on the Kindle4NTHacking page to set up USBnet and obtain a root shell.
- Write the image to main partition:
cat /tmp/postmarketOS-export/amazon-yoshi.img | ssh -oHostKeyAlgorithms=+ssh-rsa -oKexAlgorithms=+diffie-hellman-group1-sha1 root@192.168.15.244 "dd of=/dev/mmcblk0p1 bs=512"
- Reboot into fastboot mode:
idme -d --bootmode fastboot reboot
- Download and compile fread-installer-fastboot
- Flash kernel:
./fastboot flash kernel /tmp/postmarketOS-export/uImage && ./fastboot setvar bootmode main && ./fastboot reboot
- Congratulations, you now have a much less useful e-reader device. But it's running mainline Linux, so there's that at least!
Installation
See also
- pmaports!2636 Initial merge request
- i.MX508 product page