I got it a few hours ago and it wasn't even activated at that time.
1.) You need to enable developer options, enable usb debugging. 2.) Then get adblink, connect to device IP. (You'll have to authorize on box first attempt) 3.) Click 'Uninstall APKs'-> Search "airtel", I saw 3 files. 4.) DO NOT UNINSTALL FROM GUI. 5.) Click ADB Shell 6.) delete the com.airtel.tv last. 7.) This command to delete: pm uninstall -k --user 0 'App Name' .
Remote still works, not all buttons work. Airtel Remote Smart app for phone works, the pointer still works. I've managed to install JioTV and have gotten it semi working.
edit- you can re-map remote buttons through an app,
All of this was done while the 'please recharge' prompt was on screen. Its easy to bypass, you have to get into settings to enable developer options. I did get stuck once, I used to mic on remote and asked it to open play store. If you get stuck, use the google assistant to get out of a screen.
This is what the box looks like: