i have very easy solution for u all. replacement is free of jio box. factory reset box. then unplug the power.in middle of factory reset. box will stuck at boot screen. then call customer care.. they will schedule engineering team.. then they will replace box. in new box don't connect internet. 1st install apps with apk installer. and install new apk installer search on
google. give that apk installer permission. install one app with new apk installer now u can connect internet. after update. new apk installer will be their until u factory reset your box.