Sony Xperia acro S (sony-hikari)
 Sony Xperia acro S with its included dock | |
| Manufacturer | Sony |
|---|---|
| Name | Xperia acro S (LT26w) |
| Codename | sony-hikari |
| Released | 2012 |
| Hardware | |
| Chipset | Qualcomm Snapdragon S3 (MSM8260) |
| CPU | 2x 1.5 GHz Scorpion |
| GPU | Adreno 220 |
| Display | 720 x 1280 |
| Storage | 16 GB |
| Memory | 1 GB |
| Architecture | armv7 |
| Software | |
| Original software | Android |
| Original version | 4.0 (Linux 3.4.0) |
| postmarketOS | |
| Category | testing |
| Pre-built images | no |
Status: Uses unusual ELF-format boot.img that is not supported by pmOS
Contributors
What works
This device uses a non-standard ELF format boot.img file that is not supported by postmarketOS (yet):
% file boot.img boot.img: ELF 32-bit LSB executable, ARM, version 1 (ARM), statically linked, corrupted section header size
intgr has a working hacked postmarketOS toolchain for building compatible boot.img files.
What does not work
Booting.
Downstream kernels
After trying out tens of different combinations of kernel sources from the web, I couldn't find any that get as far as initramfs.
The best sources found manage to initialize the display backlight and then crash pretty late in the initialization process with error: (see dmesg)
BUG: Bad page state in process swapper/0 pfn:5dcba
WIP can be seen here: https://gitlab.com/intgr/pmaports/compare/master...device-sony-hikari
Mainline kernel
No peripherals supported yet, but /dev/last_kmsg can be extracted with a binary kernel (e.g. TWRP). Sadly the boot process appears to hang after executing /init: (see dmesg)
WIP can be seen here: https://gitlab.com/intgr/linux-postmarketos/compare/master...device-sony-hikari
How to enter flash mode
Power off the device. Hold Volume Up as you plug the USB cable into the device.
Alternatively, perform a hard reset by holding Power and Volume Up buttons. When the device vibrates, release the Power button *first*, and it will boot into fastboot loader.