Morning peeps,

Hoping you can help me with a little problem...

I upgraded the firmware on my MK3 sat nav unit about 6 months ago (to Version 25) and every now and then, the display unit would reboot, albeit infrequently. Never really worried about it as always came back after it reset. Not happened for some time until this morning and driving into work, screen went off and stayed off. After coming to a halt, I switched the engine off and left it a few minutes but after turning ignition on again, the display comes back but now comes up with a blocky screen which has all the menu options and functionality except the GPS Navigation. There is colour to the screen and the TV works but menu displays are very basic and in large blocky font format.
Since come back to check the firmware download section and Ver 25 is no longer listed, only Ver 24 (and of course Ver 26 for MK4 units).

Does anyone know if Version 25 was buggy?

Can I reprogram my unit back to life by using Version 24?

Any help would be appreciated.

Typical it happens on a Friday when I rely on satnav to get me home through the heavy traffic!!