It seems that either some strange character encoding was used.
The board also has a GPIO button installed, but that also does not make any difference when trying to enter the bootloader menu. I understand that it is impossible to reset the autoboot flag, once the firmware is flashed.
Any ideas are welcome guys as this is a really tiny WRTNode like hardware.
Best, Andrej Ok, since noone seems to be interested in these very cheap routers... I've sniffed the FTP process and got the request the router makes.
So the Environment Variables of UBoot are protected and set to autoboot = true.
I know it is possible to download the software through a programmer by removing the flash chip.