Nokia c21 is corrupt how can I update the system
When I switch on my Nokia c21 it's saying that my device is corrupt,how can I fix or update it?
crwdns2934109:0crwdne2934109:0
crwdns2889612:0crwdne2889612:0
0
crwdns2936751:024crwdne2936751:0 0
crwdns2936753:07crwdne2936753:0 0
crwdns2936753:030crwdne2936753:0 2
crwdns2942667:0crwdne2942667:0 10