Persona Error 5

[BlueberrySky]

I have a 19 year old persona. I use it just to keep a track of my period. I forgot to replace the battery. I have done so now, but it will not work and says error book 5. I can not find a solution to this on their site. Does anyone here know?

I used one 8 yrs ago
My persona baby is 7
Dh had the snip after that!

I use period app lite to track my cycle now. It's very good as you can log symptoms & notes.
It's the app with the pink flower image.

Sorry I can't be more help with the persona,but the app is way better so maybe you won't miss the persona after all.

I also period app lite, used it when ttc dc2 and use it to record my endo symptoms