Model: Formuler S Turbo
Retail Box or Provider Box: Retail Box
Firmware version and date: UP v1.6.28-r17158 2018.12.10
Did you factory reset your device? and when?: yes more times today
I used the Formuler S Turbo with FW 1.6.11 since June 2018. It was working very good without any big problems to the moment of upgrade on FW 1.6.26.
From this upgrade is device quite unstable:
1) Launcher is unstable. Launcher is not response.
2) Wifi has problems to connect and after succesfull connection do not hold stabile connection => unexpected disconnections. By FW 1.6.11 it was working OK.
So I made also upgrade on FW 1.6.28, but the result is the same. Unstability. Naturaly I did also necessary factory resets.
Then I tried to import my channel list from usb backup. After restart I received only black screen. It was unpossible to restart the device and so was necessary to do next factory reset and I was in error cycle.
I guess, there is the only one good way - to do downgrade to FW 1.6.11. But how to do it? Where can I find it as file for usb import ???