Just a little update from my side. I'm currently tryng to recreate the steps @mcplectrum was using. It seems that my RP1 also uses other ports. I tried to wireshark the USB and WiFi connection. By that I saw that often GET /registration/information is called for Host: localhost:58052. Moreover the first call is GET /register/serial_number also on port 5808. This was via USB.
Trying to trigger the /auth/ call via Telnet returns nothing unfortunately. But also the 8080 port is open. Trying to call digitalpaper.local:8443/auth/ returns nothing on firefox.
@mcplectrum: how did you get the client_id and what would one need that for?
I also tried to change the config.DEVBUILD to true but that seemed to change nothing at all.
So to sum up what we know:
The device is using some kind of android structure, the source code seems to use the uboot bootloader, all communication is done by a rest restlet framework. So actually there should be some kind of way to use the restlet framework to PUT or POST the modified files.
The other option would be directly flash the eMMC right? I would take the risk and just load it on my device and see what happens. Any hints on how to do that?
DO NOT CONTACT ME VIA PM TO RECEIVE HELP, YOU WILL BE IGNORED. KEEP IT IN THE THREADS WHERE EVERYONE CAN SHARE