KO EX1 TX Memory Problem

[Swiss]

All

I have noticed over the past couple of weeks, that my KO Steerwheel Tx seems to loose the data I set in its model memory. It did it last year, (just before national, DOH) and I set it up again, and its been OK. On Sunday, I came to run my 4wd and everyhting had gone?

Anyone got any ideas?

Thanks

Paul