Help with Tablet who just turned on after not being used for years

I bought a chuwi tablet on 2017, but it stopped working after 3 months.
I’ve tried many times to fix it but nothing happened and suddenly now it worked.
I’ve read a lot of times that it said it could be a bios update that’s making the tablet brick. Is there an update or something for this fix?
Also, is there an update for android? Because the version on this tablet is an old one.