TrekStor SurfTab ventos 7.0 HD (mid-g30ref)

Contributors

 * User:Ungeskriptet

How to enter flash mode

 * Recovery: Power on the device with both and  buttons.
 * U-Boot: U-Boot can be interrupted by holding  in the serial console when booting the device

Loading Linux from U-Boot
The U-Boot on this device tries to look for files called  (which is just a normal U-Boot script),   or   on a FAT32 formatted SD card when holding the recovery key combination. In our case, when can simply create a script which will load the kernel and the initial ramdisk from the same SD card like this: 
 * 1) Create the script:
 * 1) Compile the script:
 * 2) Compile the kernel and generate a ramdisk which are both legacy U-Boot compatible. The kernel must be named  and the ramdisk.
 * 3) Copy,   and   to the root of a FAT32 formatted SD card and insert it into the tablet.
 * 4) Boot the device with the recovery key combination.

UART
The back cover is clipped to the screen without screws and can be pried open with a tool between the metal and plastic frame. The UART pads are located on the lower left half and are kindly labeled.