Yes, his dealer has to recode the MK4 to match the car/country. (And no, you can't do this by yourself and no, there's no way around this.)

@AleX5:
Has your friend waited a while after upgrading the nav unit? When I downgraded to V26.09A, I first lost a heartbeat or two 'cause aux heating, phone, code and tv where gone, but after a few minutes all items came back.

I was playing around with the settings and every time I went back to the main screen pressing "Menu," another one of the missing entries has been back in place. Looks like the nav unit had to re-scan the bus to find all features installed.

BTW: the same always happened when I went back to V26 (+toggle3D)

HI lebowski,

yes, he did. He has been playing around the nav system for the whole sunday and a part of monday. What you mean happened same to me, after rebooting almost all functions were missing, but came back one by one in around 5 minutes.

His aux heating is definetively gone. Somebody on another board suggested to wait a few days with V26 installed, that it would come back. And so he will do, everything better than going to the dealer and tell them stories (car is sill under waranty).

I installed yesterday V26toggle3D, the first attempt went the screen back to the 90´s, version 01. Second one was succesfull and it works great. That´s absolutely enough for me. I am happy also to recuperate the BMW initial screen, so, no discussions at the dealer.

Big thanks to ambishop and all other guys who helped with their comments. Fantastic job

Best regards
ALex

Hi,
yesterday I downgraded to v.24 and back to v.26+toggle3D and it works perfectly. The only problem is the splash screen. Here what happens:
I load the navboot with toggle 3D into gifextractor and extract the gifs: I see 9 gifs, the 4th is the original splash screen. I highlight this and exchange it for the BMW with the roundel. after a while I see 10 gifs! the 4th is the new splash screen with the roundel, the 10th is a MINI splash screen. I close the gifextractor, start it once more, open the modified navboot and: there are only 8 gifs in there, now BMW splash screen, no MINI.
Anyone knows what happens?
X5PL

Don't mind it. When you REOPEN the same navboot file, FIRST you have to select the options bellow, ignore filesize and complex gifs... Else you won't see all the gifs again. I had this too, I think you can ignore this bug in gifextractor.

A--

Quite simple. Haven't thought about it.
Thanks.
X5PL