How would I go about downgrading the software so I can use my older DVD?

Just wondering because I plan to make a long trip (15+hrs) and I've heard sometimes burned discs quit working after 3hrs or so when they heat up. I would like to be able to downgrade to the old version if I have a lot of problems with my burned disc.

GnatGoSplat said:

How would I go about downgrading the software so I can use my older DVD?

Just wondering because I plan to make a long trip (15+hrs) and I've heard sometimes burned discs quit working after 3hrs or so when they heat up. I would like to be able to downgrade to the old version if I have a lot of problems with my burned disc.

I am looking for the same information.

However, for the burned disks, I have found that they do stop working after a while in the heat (they warp). Get yourself a good DVD+R DL (Memorex is what I am using) and make yourself a backup copy, but do not put a stick on label on it. I found the backup I made myself without a label is working fine in the heat. I am assuming the stick on label has something to do with it (or it might just be the DVD brand).

I have just created a tutorial for this exsact information.
It can be found here on my personal website here:

http://www.eatmorepork.ca/modules.php?n ... wtopic&t=6

Hope this helps

Great tutorial, but it appears to be for the N1.

I don't recall a reset button on the D1 or a View-POS.

Anybody try this on the D1 yet?

I haven't tried this procedure (ended up not needing to downgrade after all), but the D1/D2 does have a reset button. It's the little pin hole to the bottom left of the SRC button.

Well, I tried simply reseting the Avic with they key in the ACC position. This changed the copywrite from 2006 to 2005. I put in the original DVD with the downgraded firmware, but it still would not take it.

Anybody figure out how to do this yet?

Yeah, according to the service manual, it's the exact same procedure as the N1.

I wonder when they say hold the reset and the eject buttons at the same time, are they talking about ...

Reset and CD Eject,
Reset and DVD Eject,
(both requiring the screen to be fully down)

or
Reset and Open

I wondered that too, but I think you can try them all in less than 10-seconds. If you try it, let us know. I don't have any reason to get into the service menu... yet.

I tried and it worked!

The above instructions work.

In the instructions, substitute the Map button on the Avic where is says Navi and I believe it was the backlight button where is said Back in red.

I am now downgraded to a previous DVD map set. Yeah!

Oh yes, it is the DVD eject button you have to use, but once you are in the service menu, you can press the Open button to move the screen back and forth as usual.

If you downgrade and if you get the parking break is not hooked up right error message, don't worry about it ... it goes away once the gps picks up where you are.

I did not loose my address book, but I had to reprogram by backup camera, sound settings, etc.

it didn't work for me! It still says "please insert the appropriate disc"

Please help! AVIC-D1 here

Did you have the old disc (the one you want to use) in the drive?
Did you do both Force Write of System Program (SYS) and Application (APL)?
If yes to both, then maybe also go into the menus and Format every drive (SDRAM, SOFFS, etc).

LOL I did ALL of that including the format all drives. :cry: This is getting very frustrating. Is there any way reset to factory formating? so that when i start it up i can just load the old software on it? Cuz right now I don't even have AV screens ups.

No AV screens? It should come up with AV screens even with no disc inserted!

I just tried the downgrade on my spare D1 and it worked just fine. In fact, all you really have to do a Forced Write on is the Application Program, at least going from CNDV60 to CNDV50. It's not necessary to downgrade anything else.

What version are you trying to downgrade from, to what version, and why?

There is a Reset to Defaults option in the settings menus, but I almost wonder if your problem is more serious.

Well I think the problem is that the disc i used to upgrade I don't think is a good disc. It was purchased off ebay and is a copy. Well after the upgrade on that it came up and said "insert appropriate disc" it hasn't worked since. No disc I put in works. I tried to go back and still nothing. I do not know what is wrong with it. Everything was working perfectly before the upgrade attempt. There has to be a way to wipe everything out and start from factory load. Cuz when you buy one brand new you have to do an initial load. Yes it does sound like something more serious. I'm thinking the upgrade wasn't completed and has corrupted something that needs to be deleted.

Question...Under "Format drives" or whatever. When i go to the SDRAM option on ANY menu it says 'NG' Is this because making modifications to the sdram isn't available, sdram doesn't exist on this modal but it's a standardized "service menu" ? I dunno.

Has anyone had a failed upgrade and had to do something to fix it? :cry:

Yeah, clearing out all the backup data should completely erase it. Those are options 4 thru 8 on the first service menu.
On the Forced Program Write menu, also toggle the Init to ON.
Also try rewriting system, application, and GPS program.
The SDRAM features ARE accessible on mine, but it could be they are only available after a successful boot.

hmm interesting. When I try to write the GPS memory. My (old)disk shows available version 4.something and when i hit the button to load it it fails and remains as NG. I've tried erasing all the memory. The only one that will not erase is the SDRAM....which i think if i coulderase that one it would allow a full install again...but i dunno. The person who sold me the discs is express shipping new ones. Also the person who sold me the system said i could send it back for a replacement. So I think I"ll wait for the discs and if they don't work replace the unit. It is possible that something is wrong...it IS a refurbished unit.

I am having the exact problem . Were you able to fix the problem ? If so How ? Thansks

nope couldn't fix it. had to sent it to a pioneer service center

TheticketNJ, any word on your system? did you get it working, or send it back? it appears i have the same problem..... i'll be screwed if pioneer wont look at my warentee since i bought it off ebay.. (although it was new) anyone have any advice on this? I noticed that after trying to format and repair the SDRAM it continually came up with a NG error thinking the SDRAM is shot? I originally had AV for about 5 minutes after "upgrading" then lost it, i can play music but i have no control over it other than moving the joy stick, i cant access any of the push button controls. for anything.. just stays at the :please enter correct dvd" screen

I'm not sure of this exactly. But I believe this happens when the software is not fully upgraded. Is the Upgrade DVD that you bought a DVD+R? I think that is the problem. Hopefully if yours was a + also then I can go ahead and try my DVD-R disc. I've been wary of doing so. But the way sdram works is everything is probably hardcoded addressed in the software to access specific parts of the sdram and if all those parts aren't there then it doesn't know what to do. So it defaults to the "I don't have a program" screen. That is just my guess. I answered your PM please respond back here on to my PM whether you have a DVD+ or - Thanks.

the DVD that i was using was a +R dvd. but... when i first got the navi, i had a friend of mine burn the Cndv-60m east onto a +R for me, and i've been using that ever since, I could not get my hands on the west disc so i ended up buying the set off ebay and i figured when i threw the east one in, since it was supposed to be the exact same thing it wouldnt do anything different, well come to find out it wasnt the same thing as what i downloaded and it started to upgrade my navi. and then the problem happened. So, i'm not sure it has anything to do with the +R because i was running a +R for a good 3 weeks before this happened. how fast was pioneer with fixing and returning your navi? theres a local pioneer service center not far from here i was thinking about going up there and talking to them about it.

Took over a month to get it back.

I have just tried to do the downgrade on my AVIC-D1 since it's telling me "Please insert appropriate disc" and I was not able to complete it.

When I get to the force write part I go through the menus to do the system program and once I get to the language selection, all of them say [ NG ].

ie.
2. English US [ NG ]

I'm trying to use my 1.0 discs that I got with the unit. From what Pioneer told me, the previous owner may have used newer ones and since he did not give them to me, I can't use mine.

Here's the versions I found in the version check menu:

System Boot Version - 1.0
System OS Version - 1.02
GPS - 4.40
Application Version - 2.010010
Language Version - 2.000073

The language file it is currently using is UC050DAT.USA
and the system file is UC050SYS.USA

Anyone have any ideas on this? Thanks in advance.

Anyone? If it's broken I'm going to have to bring it in for service...