2002 john deer 5420 dash hours

[RUNVIN]

anyone have softwere to calculate hours on 2002 john deer 5420
I have carprog don't have 5420 john deer

inside the dash is 93c56 eprom
current hrs are 196.0 need to go up to 1516 hrs

[TOINO]

try this and report

[RUNVIN]

I don't have the tractor in my position I can only test it on bench if someone have diagram