Got an AFTV at staple the other day. I tried to follow the aftvnews guide "How to setup a new AFTV...".
Apparently my AFTV was pretty old since the initial unplug/plug trick did not work and the box was always stuk on waiting to download the update. I finally let the update run through and ended up with Firmware 18.104.22.168_user_510058520.
After that I tried to root the AFTV. For this I used adbFire. I was able to connect to the box (no internet connection at that time) and click on the Towelroot option. I did click on "Make it ra1n" and wait for a very long time. I never saw any message indicating that it succeded or failed. With the remote I ended up going back to the previous menu. I tried to install SuperSu but that did not work. Su was not installed. After rebooting the box, I get the back and white Amazon logo and then the screen goes black. The TV shows the selected input as if the AFTV is not sending any signal. I tried to plug the internet cable (with the 2 domains blocked) and the AFTV finally goes from the Orange blicking led to the Blue one but it's still stuck after the amazon back and white logo. I did try the ALT-I-PrntScr (which had worked previously when I was trying to prevent the update to install, I managed to get into recovery and do a factory reset ,so I know the keyboard itself is OK). But this time ALT-I-PrntScr only get the box to restart and brings me back to the Amazon black and white logo that disappear after a minute.
Nevertheless, I can still access the box from an adb shell, adbFire can connect to the AFTV. But since I no longer see any menu on the screen I can't attempt to reroot from adb fire.
A reboot recovery does not work as it's not authorized.
su command is not found , so it would confirm supersu did not install (properly). What's weird though is that if I do a ps, I see a process "u0_a1 6199 328 476352 18640 ffffffff 00000000 S eu.chainfire.supersu"
Any idea how I can unstuck the box ?