Well, as it turns out, this "reset" is not easily reproduced with another SD card!

I have a feeling that there is a bad spot on this SD card (it's an *OLD* 4GB SD (not SDHC) card that I've had for many years. I can only get this "reset" to happen when exiting iGo 8 when using this specific SD card. Even if I copy the exact contents to another card (tried SD, SDHC, same size, etc), I cannot get the reset to happen when exiting iGo8....

I also found a way to get Primo 2.4 to crash consistently, but it does NOT cause the calibration to be saved permanently like it does when I exit iGo8 with that one specific SD card.

It's crazy... I'm also being very careful not to "break" this 4GB SD card, because then I won't be able to permanently fix the calibration on my units either. :-) I have about (7) GM1010's and I haven't fixed the calibration on all of them yet.

But, let me keep trying - hopefully I can find some way to reproduce the circumstances that saves the calibration permanently with another SD card...

I'll figure something out. This is all VERY strange stuff...

What's really strange, is with the SD card that causes the calibration to be saved permanently, I can actually exit iGo8 - then a second or two after exiting is when the unit does that reset - but only with this one SD card. Very, very strange stuff...

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Ok, I finally found a way to make this work without needing a "bad" SD card (my original iGo8 card must have bad sectors). After much testing, here is what I found...

Even though I could get Primo to crash "on-demand" (with a bad data.zip), when Primo crashed, it didn't "save" the screen calibration for some reason. So, I found a way to make iGo 8 crash "on-demand" (by purposely corrupting a .poi file) and when iGO 8 crashes, it *does* save the current screen calibration into the headunit itself somehow! Crazy stuff.

So I've PM'd you a link of a .zip file with PA map and corrupt PA POI files. Using the iGo8 card that you previously built, put these PA map and poi files into their appropriate directories on the iGo8 SD card. Then following this procedure:

1. With iGo8 map card ejected, start up the unit so that the screen calibration routine runs automatically. Make sure to put the SD card back in after the screen calibration screen comes up.

2. Once iGo8 starts after calibrating the screen, search for a POI in Pennsylvania. You need to actually search by name - which forces iGo 8 to read through the entire (now corrupt) PA POI file. After you press the first search character, iGo8 will crash and the Rosen unit will go to a white screen with "Loading..." at the bottom. After the loading process completes, you will be returned to the Rosen "red sky" screen.

3. When you see the "Red sky" screen, cut power to the radio. - at this point, your screen calibration should be saved permanently - regardless of what iGo app you use!

4. Test it out by putting your original Primo SD card back in and powering the radio back up - if your P11 unit is like my GM P11 unit, it should be fixed permanently.

Please report your findings. Talk about a need in a hay stack! :-)

OMG!!! After four years of trying in vain to find a solution, IT WORKED!! Not only does the navigation touchscreen calibration get saved permanently, the touchscreen calibration gets saved permanently for the audio/phone functions, too, even with RDS activated. This is a major improvement in functionality. Thanks for finding the solution and providing the files.

I do wonder why it works? The only thing I notice is that your sys.txt file has an entry "autosave=1". Perhaps that causes certain settings to save to the internal drive should there be a crash. Or, there is another sys.txt entry that is saving the settings upon crash. Whatever is making it work, it appears that it is changing something on the internal drive that enables the system to load the touchscreen config files. This is probably related to the original Rosen installation and not the firmware of the hardware unit as I had originally thought. Rosen does seem to be lacking in good engineering and, for me, has taken no responsibility to fix things after the sale. It is likely they just didn't properly set up the software. Their tech support repeatedly refused to acknowledge the problem existed despite me sending screenshots clearly showing the issue.

Again, THANKS!!

AWESOME! Glad to hear that it worked for you as well.

I don't think that the sys.txt really has anything to do with it. I truly think that when iGo8 crashes, it causes the unit to go through some sort of reset that causes the "current" screen calibration to be written internally to the unit somewhere. I think that iGo8 just crashes in a way that initiates a all of this where Primo crashes do not - OR, and this probably make more sense, only crashes dealing with map or poi files cause this type of "full" reset (I'll have to try using that same corrupt POI file with Primo to see if it then works as well).

I think that you are correct in that the default system configuration is just mis-calibrated slightly from the factory. Pretty poor "QA" in that area, eg? :-)

Anyway, so glad to hear that it worked for you - I was hoping that I didn't go through all of this for nothing. :-)

If it weren't for my old iGo8 SD card with bad sectors, we would have never found this solution - it was a good deal of "dumb luck" that allowed us to find this needle in a haystack!

I even booted the unit directly into WindowsCE and ran a screen calibration from Windows CE control panel and even that didn't fix the problem. While I could see another partition from WindowsCE, it just shows up empty, so it must be in a format that WindowsCE doesn't recognize (I was thinking maybe we could manually copy the screen calibration file that way originally).

Anyway, like I said, glad to hear it worked for you. I've been selling these GM1010 units to other forum members on ImpalaForums, so it's nice to know that I can get them properly calibrated before sending them out as well.

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How do you boot the Rosen directly into WindowsCE? Do you have to connect a PC to the Rosen, or what?

Have you considered going into WindowsCE and checking the properties of the file system, i.e. size and number of files. Then run the procedure with the corrupt SD card to calibrate the touchscreen. Then go back into WindowsCE and see if the size and number of files changed. Also, search for files in WindowsCE that were just added or changed. You might find what has been added and be able to just manually copy that file there on future units.

The Windows filesystem is just Windows - nothing Rosen-related. Where the Rosen stores data is on the two other partitions that Windows can't read (no files show up in them under WindowsCE).

Honestly, it's easier to just go through the iGo8 crash process that it is to boot into WinCE and copy files around manually anyway. :-)

To get into WindowsCE, you just have to replace nngnavi.exe with the binary of a WindowsCE file explorer. Then, when the navigation system boots, it actually stats the WinCE file explorer instead of iGo. From there, you can browse the Windows filesystem, run Windows explorer, etc...

I'll PM you an archive of a few WinCE binaries (file explorer, GPS radio testing app, etc) in case yu are interested in looking around in WinCE. It actually has Office, Internet Explorer and a few other little apps built in. Not much you can do with though since there is no way to get internet connectivity (trust me, I tried). :-)

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Hello Guys;

I can't believe that someone found a solution for this problem I have been facing troubles with my Rosen System for years now but its slightly different
I have the DB Mustang OEM navigation set and it was working fine in the binging but suddenly whenever I power down the radio (Turnoff the engine) turn it on again while the SD card inserted the white calibration screen shows up and it gets stuck there till I actually remove the SD card and turn it off and on again. the strange thing is once I re-insert the SD card the NAV system works find and there is no calibration issue like you guys are experiencing. So basically the problem is in starting the unit with the SD card inserted.

I am not sure if I am making any sense, let me know if you would like me to explain more.

Do you have any idea how I can solve this issue? Do you think if I get a copy of the iGO folders that you created it would actually solve this problem?
Please help

Stupid question - but are you sure the write-protect tab on the SD card isn't set to write-protect mode - and it just can't successfully write the screen calibration file (which causes it to fail when trying to write the screen calibration)?

If that's not it, I'd suggest getting a new SD card (8gb or greater) and then I can supply a full image that you can write to the SD card. Not only will this hopefully resolve your issue, but will also get you the latest version of the GPS app as well as the latest maps, pois, buildings, etc...

Does your unit use iGo Primo or iGo 8? Also, what is the resolution of the screen (not familiar with the Mustang Rosen units)?

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