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Jolla C2 (jolla-c2)

From postmarketOS Wiki
Reeder Jolla C2
Jolla C2 community phone
Jolla C2 community phone
Manufacturer Reeder
Name Jolla C2
Codename jolla-c2
Released 2024
Type handset
Hardware
Chipset Unisoc Tiger T606 (UMS9230)
CPU 2x 1.6 GHz Cortex-A75, 6x 1.6 GHz Cortex-A55
GPU Mali-G57
Display 720 x 1600 LCD
Storage 128 GB
Memory 8 GB
Architecture aarch64
Software
Original software Sailfish
Original version 5.0
FOSS bootloader no
postmarketOS
Category testing
Pre-built images no
Mainline yes
Unixbench Whet/Dhry score 4324.4
Features
Flashing
Partial
USB Networking
Works
Internal storage
Works
SD card
Works
Battery
Works
Screen
Works
Touchscreen
Works
Multimedia
3D Acceleration
Works
Audio
Partial
Camera
Broken
Camera Flash
Broken
Connectivity
WiFi
Partial
Bluetooth
Works
GPS
Broken
Modem
Calls
Broken
SMS
Broken
Mobile data
Broken
Miscellaneous
FDE
No data
USB OTG
Partial
Sensors
Accelerometer
Broken
Magnetometer
Broken
Ambient Light
Broken
Proximity
Broken
Hall Effect
No data
Haptics
Works
Barometer
No data
Power Sensor
No data
U-Boot
Primary Bootloader
Broken
Secondary Bootloader
Works
Mainline
Broken
Internal Storage
Works
SD card
Works
USB Host
Broken
USB Peripheral
Broken
Display
Works
Keyboard
Broken
Buttons
Broken


The Jolla C2 community phone is a Jolla-branded version of the Reeder S19 Max Pro S.

Contributors

Users owning this device


How to enter flash mode

Fastboot mode

With the phone powered off, hold the power key until the phone vibrates, then press the volume down key.

Unisoc emergency flash mode

Power on or reboot the phone with the volume up key held and connect with a flashing tool.

See https://sailfishos.wiki/books/jolla-c2/page/flashing-the-jolla-c2-using-the-unisoc-flash-mode for more information.

Installation

Backing up the Sailfish OS boot image

Enable developer mode on Sailfish OS and copy /boot/hybris-boot.img from the phone using SSH.

Using pmbootstrap

Follow Installation/Using pmbootstrap and install to an SD card. When asked for the device's vendor/codename, select jolla as the vendor and c2 as the codename.

To boot the device from the SD card:

  • Enter fastboot mode (see #How to enter flash mode)
  • Run pmbootstrap flasher flash_kernel to flash a boot image containing U-boot as a secondary bootloader
  • Run fastboot reboot

pmbootstrap flasher flash_rootfs is not recommended as it will overwrite the preinstalled Sailfish OS, requiring a complete reinstallation (not documented here).

Booting Sailfish OS

To boot Sailfish OS again, enter fastboot mode and run:

$ fastboot flash boot_a hybris-boot.img
$ fastboot reboot

See also