Hi guys, I hope you don't mind if I write here in english
Have you tried to update the firmware of the navi as well? On the HDD I found a partition with a folder containing LOADING.KWI, and inside this file there is a version: VA05100L. On the disks, there is a similar file in the TU05 folder, but with version: VA05113A
Do you think by overwriting the files in the folder I can upgrade the navi? If things go wrong, can I restore the original hdd, and get back the old version?