MR.AK

Can you help me install a unlocked version of android.

I happen to have got a Android tv box with a s905Y5 processor. I got this by a tv subscription from a company airtel in India. I unsubscribed from the subscription and my tv box is completely useless. it asks money for watching youtube!!!. I am extremely frustrated from this approach by this company so please help me save this from getting into e-waste. From my research i found that it runs android 14 with a custom launcher which checks for the subscription and a locked down kernel/bootloader which checks for signatures before boot. I came to know these from the uart output. I also found that it is basically a customised version of this box https://www.videostrong.com/products-show/vt9201-s905y5-aiot-solution