UC20 G GPS time

This is the problem exactly, it shows 2000 year date.
$GPRMC,111533.0,A,4059.973549,N,02852.765405,E,9.7,70.4,280600,A*5E

$GPGSV,3,2,11,15,43,302,37,17,33,136,38,19,18,157,35,30,41,075,45*76

$GPGSV,3,3,11,35,24,20,01,326,24,05,282,*76

$GPRMC,111534.0,A,4059.974510,N,02852.768539,E,9.7,70.2,280600,A*57

$GPGSA,A,2,05,07,13,15,17,19,28,30,1.4,1.1,0.9*3C

$GPGSV,3,1,11,05,17,217,38,07,11,088,37,13,76,291,35,15,43,302,38*72

$GPVTG,72.5,T,72.5,M,8.9,N,16.4,K,A*11

Check it please.

It is also written there. And it is your mistake. I have device on field. How can we solve it. We must able to fix it by AT command. We must able to update firmware with AT command. Otherwise it is a big problem.