C6 Navigation fix for a BLANK CLOCK AFTER BATTERY DISCONNECT!

[c4c5specialist]

NEW REVISION RELEASED May 18, 2020 for Technical service bulletin 19-NA-262. THIS IS A COMPLETE REPOST!!!!!!

Important: A personal computer with a CD/DVD burner is required.
 1. For a navigation radio in a Corvette with RPO U3U, go to the website https://drive.google.com/open?id=1-E...DVkSDpnGgL6nU1.
 2. Click on Download.

NOTE PICTURE #1a

3. A. If using Internet Explorer, select Save As and Save the file to the Downloads folder.

B. If using Google Chrome, after download is complete, go to downloaded file in the lower left corner, click the up arrow andselect “Show in folder.”

 4. Find the newly saved file “245_135A.iso” and right click on it.
 5. Select “Burn disc image.”

NOTE PICTURE #2a

6. Select the Disc burner and the select Burn.

NOTE PICTURE #3a

7. After 5 minutes, the disc will be completed.
 8. Make sure the vehicle is outside and the engine is running.
 9. On the radio display, press the Open/Close Faceplate Key (A).
10. Eject the map disc by pressing DVD Map Database Eject Key (B). Insert the Software Update Disc in the DVD Map Database Slot(C).

NOTE PICTURE #4a


11. The update will start automatically. You will see a progress bar on the screen. The update takes about 2 minutes. The vehiclelogo will be seen once the update is completed.

Note: If the update does not start, verify the radio part number in the vehicle is the correct part number for the model year,make, and model involved.

12. Eject the update disc and insert the map disc into the DVD Map Database Slot (C).
13. The software update procedure is completed.


THIS IS A COMPLETE REVISION TO THE PROCESS ISSUED BY GENERAL MOTORS, and it can be used for those who cannot do the previous update.

[marinablu67]

Thank you, it worked perfectly, not only do I have the clock back with the correct time, all the other functions of the navigation system work properly too!

[jbeidl]

Just installed on my 2007 Z51 Coupe. Clock was still working but I need to disconnect the battery to do some work. Install went well, however my NAV display has a black background much link it previously worked at night. It as still daylight 3PM EST in North Carolina. It is possible that this is the normal setting for NAV's newer than 2007. I have yet to find a way to go back to the brighter screen but may not be possible with this newer level of firmware.

Anyone else see this on a 2005-2007?

Update! When I drove the car into a brightly lite garage the NAV screen went back to normal. That car must have been in enough shade to fool the light sensor.


John

[Nobrakes]

Thank you !!!!

[F4Jock]

Hello All,

I followed the instructions but all I get for my 2005 C6 is that the disc is not a map disc. Doesn't start the fix. What am I doing wrong? TY

[c4c5specialist]

HI there,

Give it up to 20 mins to accept the disc and do the lay out, no need to fold the door back up.

Let us know how you make out, Paul

[F4Jock]

HI there,

Give it up to 20 mins to accept the disc and do the lay out, no need to fold the door back up.

Let us know how you make out, Paul

Twenty minutes! Hokey Smoke Bullwinkle! Actually after messing with DVD-Rs and CD-Rs (Anyone need some coasters?) I finally got it functional by changing my unzip program. Worked fine! Yes, I did close the door as well. Suggest that you might want to add those two points to the instructions, the wait time and door position tho.

Anyway, thanks for the fix!

Jack

[SLVFOX2008]

Jack
Having same problem. Used WINZIP the second time and still cannot get it to load. Which UNZIP program did you use?

[F4Jock]

Jack
Having same problem. Used WINZIP the second time and still cannot get it to load. Which UNZIP program did you use?

I used PeaZip.

[Bruetting]

I see a lot of your threaders are having trouble unzipping and getting the file to the CD. Windows 10 will not automatically do that anymore. You need to use a third party burner like Cyberlink or what ever app is on the computer. I Yanked my new Kenwood DNX996XR out just to see if this would work. It loaded, updated and the Corvette logo reappeared but unfortunately the time on the clock DID NOT. I waited a few minutes to see if it would calibrate but didn't. Pulled it out and reinstalled my new one. It obviously took the software update and did not respond to a second attempt to install it. That was a waste of an hour. Any ideas why it did not respond as expected?

[SLVFOX2008]

I have tried 3 unzip programs without any success. Cannot get any to load!

[c4c5specialist]

Very interesting, as I used the Window PRO 10 operating system.

I do not know if that has a correlation or not.

I will put some feelers out and repost up.

Allthebest, Paul

[Bruetting]

Hey F4Jock, You are probably trying to load the "folder" instead of the "file". You need to transfer the LOADING.KWI file ONLY to a blank disc. You can burn it or rip it using a third party program that is probably already on your computer. Windows Media won't do it. Mine came with Cyberlink and it burned it. Hope you understand that and hope it fixes your issue.

[SLVFOX2008]

I did use the unzipped file for LOADING.KWI on Windows 7. Used two different unzip programs. Also did an unzip on my MAC. None of the programs would load.

[HecatesChild]

Did mine yesterday. Worked perfectly
- Windows 10 Enterprise v1809
- 7zip
- Extracted just the file to the ROOT folder of a BLANK CD-R

Ensure it is a CD-R and not a CD-RW or DVD-RW. Also ensure you "Finalize" the disk so that it can take no more writes. Many non-computers don't like un-finalized disks