OK - all done!
Download the two parts of the software update from here (should take you to post #31):
http://gpsunderground.com/forum/peugeot ... post180183
Once these are downloaded (make sure both parts 1&2 are in the same folder) then download and install WinRAR if you haven't already got it so that you can extract the archives. From here, open Part 1 and extract the .ISO file to a location of your choosing. It will automatically do part 2 as well so in the end you should be left with a single .ISO file called "NG4_SW_N42b_42.01.ISO" which is around 360Mb in size.
Next, burn this to a good quality DVD-R (Verbatim recommended) at 4x using a burning utility of your choice. A good free one is 'IMGBurn' - it's free, easy to use and best of all supports pretty much everything from Windows XP through to Windows 8. Whichever program you use, pick the option to 'Burn an Image', browse to your .ISO file and open it in your burning software of choice. Remember to burn at 4x!
Once done head out to the car, remove any USB Devices, SD Cards and CD/DVDs for safety and pop your DVD in. After a couple of seconds you should get the message appear on the multifunction display:
"Please do not interrupt the software update once it has started. The engine must be running during the software update. Shall the update be started?" You get two options - Yes (highlighted) and No. Highlight 'Yes' if necessary and click 'OK' on the NG4.
The unit will reboot after a couple of seconds and 'Update in progress' appears on the display. It will take a good 20 minutes at least so don't panic if it takes its time. Once complete, the unit will reboot a final time and after a few seconds you'll see a message saying that the update completed successfully. Click 'OK' to acknowledge the message and voila!
To check it has gone through, click 'Setup' on the NG4 headunit and go to 'System' > 'Software Version'. You should see the following: 'ng4_D_N42b_N42.01'.
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A word from experience - I burned it to a good quality Verbatim CD-R first off at 16x - the update stopped at 8% on 'SSS.ISO' (1% overall) and stuck for 10-15 mins. The unit was unresponsive and wouldn't eject the disc. Killing the ignition didn't turn the unit off so if this happens to you first off DON'T PANIC!
Open the glovebox and turn the lock on the fusebox door 90 degrees and pop it open. At the rear of the door pop the cover off and remove the fuse blade holder (red in colour - looks like a pair of tweezers). The fuse you need to remove to kill power is 'F8' - it's on the block at the bottom rear of the compartment and it's the yellow 20A fuse. Pop it out with the fuse holder for a few seconds and the power to the NG4 will cut off and the screen will fold down. Pop it back in, turn on the ignition and the NG4 will start back up. You'll get a prompt pop up about why the process failed and you'll be asked whether you want to retry (Yes/No). Click 'Yes' will restart the upgrade. 'No' takes you back to the usual Radio screen and it'll behave as it did before (although your settings and the time/date etc will have been reset).
When this happened to me I was using a CD-R - I reburned to DVD-R and it went through perfectly hence why I say to use a DVD-R for a piddling 360Mb download. I suppose they're cheap enough now these days anyway!
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I have recorded the procedure on my phone so I'll pop the video up to YouTube so you can see the full process go through in real-time. That'll give you an idea as to how long it takes, where it pauses etc etc. It will also show you the fuse to pull in an 'emergency'!
EDIT: As promised, you can find the video below:
[youtube]http://www.youtube.com/watch?v=GQ4MJXvPmM4[/youtube]
Cheers all!
