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  #1  
Old 08-31-2009, 06:59 AM
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Problems with my MKIV

Hi all,
First of all I just wanted to say that I'm a total newbie when it comes to navigation systems, updating and issues with them. I've been reading through a lot of the posts here to try finding someone with a similar problem, but I haven't found it yet. I'm probably going to ask a lot of stupid questions in this thread, but please -bear with me...I'm just trying to learn
Ok, here it goes;
Recently I've been trying to upgrade my navigation system from a MKIII unit to a MKIV unit. The car is a -02 M3, originally delivered with the MKIII unit and the 16:9 screen in the dashboard.
I bought a MKIV unit on ebay. This one came from a crashed X5.
So here is what happened;
I disconnected the MKIII and installed the MKIV. After installation I only get a light in the eject button on the MKIV unit, no red light in the power LED.
When i turn the ignition on, I get a custom splash screen (X5 picture with bmw logo).
The main menu looks more or less the same as the one i had with the MKIII with the exception of a few things. I now have a telephone menu, and i also had a second new item on the menu (which i can't remember what was - the menu is in german), but this one has now disappeared after a few on-and offs with the ignition.
This is where is get stuck, and this is what I've tried.
When in the main menu, I can't go into the settings menu. If i do, the navi computer freezes and i have to turn ignition off and wait until it powers down until i can get back in again. If i turn ignition on before the unit has powered down i only get a menu that looks like an early windows version (created by something else than the navi computer I assume).
The hidden settings menu doesn't work either.
My first thought was that i have a unit with corrupted memory (since there is no red power LED "on" on the unit).
From reading other threads on this forum I've seen that somebody was able to get the unit "back to life" by updating the OS.
I've tried this. With burning both the v.031 and v.032 on both cd's and dvd's (in case it wouldn't read one or the other). No success. I've also tried to alter the files in the HEX editing program to see if it would load then. Still the same.
When trying to load a new OS the following things happen.
Following the instructions given on the forum here - when I insert the OS cd or dvd nothing happens. I've waited 15 minutes and if I try to enter the navigation menu then it tells me that there is no navigation cd/dvd in the nav unit.
If i then turn ignition off, let the unit power down and turn the ignition back on again, it recognizes a software cd/dvd in the unit.
Again, the menu is in german, so I'm going to write whet comes up on the screen; "Software - CD im navigationsrechner. Software wird geladen".
And that is about how far i get. It doesn't come up with any progress bar for loading the software - it just stays like that for 20 min+
If i then turn ignition off and take the cd out, the unit goes back to what it was like when I first installed it (X5 splash screen - normal menu).
There is no software number in the upper right corner of the screen.
I've also tried the CD map i have in my MKIII (as I've heard it should also work on the MKIV), but it doesn't recognize any CD/DVD map in the unit.

So, is there anything really basic I've missed? Is it so that the unit won't let me enter the settings menu unless i have a map DVD in it?
My gut feeling is that the memory is corruped and that it needs a re-flash, but hopefully you guys can enlighten me?
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  #2  
Old 08-31-2009, 02:33 PM
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I would guess two things:

1. Water damage on the main board

2. Corrupt flash memory and/or bad laser

I'd talk to the seller and ask about a replacement unit / money back
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  #3  
Old 08-31-2009, 04:15 PM
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Quote:
Originally Posted by KiwiJochen View Post
I would guess two things:

1. Water damage on the main board

2. Corrupt flash memory and/or bad laser

I'd talk to the seller and ask about a replacement unit / money back
I'll try to open it and see if there is any obvious damage inside...
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  #4  
Old 09-01-2009, 01:44 AM
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Jochen, would trying to back to an older Ver. like maybe 24 and then back to 32 be a possibility?
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  #5  
Old 09-01-2009, 03:10 PM
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Yeah i forgot that, worth a try.
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  #6  
Old 09-01-2009, 11:39 PM
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Before opening it to look for water damage, just look at the outside of the case (top and bottom). You may see calcium deposits where the water was sitting and dried up. To see the damage inside, you may need a high power magnifier. The components are very small and damage is not necessarily apparent to the naked eye.
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  #7  
Old 09-17-2009, 12:38 PM
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Sorry for not posting anything here lately. I have been busy with a lot of other work on my car.
Anyway, I opened the unit today, and I couldn't find any obvious damage caused by water ingress. Cleaned everything with alcohol, and when i re-installed it in the car the red power LED is now working as it should.
Does this mean only the os is corrupt?
I still can't enter the "settings-menu" from the dashboard screen.
Does anyone have a link to where i can download the V.24 software?
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  #8  
Old 09-17-2009, 04:59 PM
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Ok, I managed to get the V24 software and I tried to install it in the nav unit.
Sadly enough, I still have the same symptoms as before.
If i turn the ignition key on and then put the cd in the unit, it doesn't seem to be able to read it.
If i turn the ignition off (with the cd still in it), I can hear that it is reading for maybe 8-10 seconds after bootup. I then also get the message as decribed before "Software - CD im navigationsrechner. Software wird geladen".
After this, nothing happens. The only sound from the nav unit is the cooling fan in the back.
I'm starting to suspect a faulty laser. Does this sound totally off target??
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  #9  
Old 09-17-2009, 11:28 PM
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Without wanting to exclude laser reading issues, this sounds very much like a case of corrupt flash memory. It also sounds like you are unable to recover this navi from the CD OS route.

Perhaps send it to Conti (VDO) in Germany for reflash.

I also do this work in Australia but the transport cost for you will be very high.

Did the ebay seller give a guarantee or can you claim it back through Paypal?
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  #10  
Old 09-18-2009, 12:06 AM
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I've just ordered the new laser (SF-HD4), so I'm gonna try change that first.

Unfortunately I was stupid enough to buy an untested unit, and the seller refuse to take it back, so I'll just play around with this one a little bit and see if i can get it working. If not I guess I'll have to order a new one again.

Can you please PM me how much you will charge to do the re-flashing of the unit if it comes to that stage...
It will cost me about USD73 to ship it to Australia, and probably the same back again (doesn't differ much from sending it to Germany), so I might just consider that..
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