Since January 2019 Infomir started to fight against IPTV Providers and put a blockage up with a software update. To bypass the blockage you need to downgrade the firmware.
**NOTE: If your device boot mode got changed, please change it again to NAND.**
Download: https://mega.nz/folder/g9oHQDYA#t7H9GyX6wArzGNz1DZNTHA
Here is a Video, which shows the exact Steps: