PocketBook 614 plus (pocketbook-614-plus)
CHANGE_ME CHANGE_ME | |
Manufacturer | PocketBook |
---|---|
Name | 614 plus |
Codename | pocketbook-614-plus |
Model | PocketBook 614 |
Released | 2017 |
Type | ebook reader |
Hardware | |
Chipset | Allwinner A13 |
CPU | ARM Cortex-A8 @ 1Ghz |
GPU | Mali 400 MP1 |
Display | 800x600 e-paper |
Storage | microSDHC |
Memory | 256 MB |
Architecture | armv7 |
Software | |
Original software | PocketBook firmware |
Original version The version the device was shipped with. |
Linux 3.0.8 |
FOSS bootloader | yes |
postmarketOS | |
Category | testing |
Pre-built images Whether pre-built images are available here. |
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. |
6.8.0 |
Unixbench score Unixbench Whetstone/Dhrystone score. See Unixbench. |
0.0 |
Flashing It is possible to flash the device with pmbootstrap flasher . |
Untested
|
---|---|
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
|
SD card Also includes other external storage cards |
Works
|
Battery Charging and battery level reporting works |
Works
|
Screen Display works. Ideally with sleep mode and brightness control. |
Untested
|
Touchscreen |
Untested
|
Multimedia | |
3D Acceleration |
Untested
|
Connectivity | |
WiFi |
Untested
|
Miscellaneous | |
FDE Full disk encryption and unlocking with unl0kr. |
Untested
|
USB OTG USB On-The-Go or USB-C Role switching |
Untested
|
Sensors | |
Accelerometer Auto screen rotation works in desktops e.g. Phosh or Plasma Mobile |
Untested
|
Magnetometer Sensor to measure magnetism |
Untested
|
Ambient Light |
Untested
|
Proximity |
Untested
|
Hall Effect Also known as flip cover sensor |
Untested
|
Barometer Sensor to measure air pressure |
Untested
|
Power Sensor Sensor to monitor current, voltage and power. Not fuel gauge! |
Untested
|
Primary Bootloader It is possible to replace stock bootloader with U-Boot. |
Works
|
---|---|
Secondary Bootloader It is possible to chainload U-Boot from stock bootloader. |
Untested
|
Mainline Latest versions of U-Boot are not broken and it is possible to use them. |
Works
|
Internal Storage It is possible to boot from internal storage (e.g. eMMC or UFS). |
Works
|
SD card It is possible to boot from SD card. |
Works
|
USB Host It is possible to boot from a USB storage or connect a keyboard. |
Untested
|
USB Peripheral It is possible to use device as a peripheral in U-Boot, e.g. for fastboot mode. |
Works
|
Display |
Untested
|
Keyboard |
Untested
|
Buttons It is possible to navigate in boot menu or grub with volume and power buttons. |
Untested
|
Contributors
Users owning this device
Original software
A regular sdcard is used as internal memory, so we can simply take it out and read/write it on the computer. It is worth noting that the image is tied to a specific sdcard (its serial number), but it is enough to simply untie the image from this dependence.
Note: Before experiments, make a backup copy of the SD card (via dd) |
# fdisk -l /dev/sda
Disk /dev/sda: 7.37 GiB, 7908360192 bytes, 15446016 sectors Disk model: Card Reader Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disklabel type: dos Disk identifier: 0x00000000 Device Boot Start End Sectors Size Id Type /dev/sda1 1009664 15446015 14436352 6.9G b W95 FAT32 /dev/sda2 * 73728 139263 65536 32M 6 FAT16 /dev/sda3 1 1009664 1009664 493M 85 Linux extended /dev/sda5 139264 172031 32768 16M 83 Linux /dev/sda6 172032 204799 32768 16M 83 Linux /dev/sda7 204800 275455 70656 34.5M 83 Linux /dev/sda8 275456 776191 500736 244.5M 83 Linux /dev/sda9 776192 976895 200704 98M 83 Linux /dev/sda10 976896 1009663 32768 16M 83 Linux Partition table entries are not in disk order.
sda1 - userdata sda2 - boot partition (with kernel) sda5 - ??? sda6 - ??? sda7 - root (/) sda8 - /ebrmain (contain cramfs.img) sda9 - /mnt/secure (contain some apps and libs) sda10 - ??? (contain dictionaries)
Unlinking an image from a specific SD card: after the system starts, the main application is launched - pocketbook located in /dev/sda8 (in fact, this is a link to /mnt/cramfs/bin/monitor.app). This binary contains a check for the serial number of the memory card. However, we can easily cheat this check: replace the path to the serialnumber of sdcard with a simple text file with this number.
copy the cramfs.img file from sda8 and unpack it: cramfsck -x tmp_cram cramfs.img
As a result, there will be a monitor.app file in the tmp_cram/bin directory.
Using strings we can find that the program gets the serial number from /sys/block/mmcblk%c/device/serial
Сreate a file with serial number in /mnt/secure (you can do it in another place, the main thing is that the final path is the same length as the line above) and replace path from from /sys/block/mmcblk%c/device/serial
to your file.
now just copy the file to sda8, delete the old link and create a new one. ln -s monitor_patched.app pocketbook
Installation
pmbootstrap install --sdcard=/dev/sda
See also
- pmaports!4901 Initial merge request
- Device package
- Kernel package