Hello all.

My Connect Nav+ died on me during update, and 've read that some of the guys actually succeded by pushing some buttons on it during the update, to keep the cd alive, since it seems to be the problem with broken updates - cd stops spinning and update process can't continue, so it fails sometime in the middle.

Now, my CN+ won't boot properly because it seems to be wanting to continue updating itself (or do the update all over again) but it won't really start the process as it should.

I've taken the unit out and opened it, saw a flash eprom, RAM, CPU and another custom chip (chipset?), but couldn't find some connector that might be used to do an external flashing/control of the board.
I also looked at the update disc files and saw that VxWorks is the OS in the unit, but have no idea which file is for what.

So, I was wondering is it possible to have it updated outside of the vehicle, by connecting it to an external power supply and then fiddling with the update process?

I'd like to try that, so I need a pinout of it's main logic/power connector (I think it's the white one with small pins, guess CAN lines are there as well).

I saw some pins mentioned in some posts around about making time delay circuit and others, but they mention two pins as the ones that should have +12V ignition so I'm not really sure which pin is for what - that's why I need the pinout!

Thanks.

P.S. If somebody has a better solution for re-updating CN+, I'm open for ideas.

I would like that too. I have a faulty one I am trying to get going (not failed through update like yours). The Connect Nav+ is based on a Hitachi SH-4 processor. It can be programmed through a Jtag interface, which is on the small red connector on the left side of the PCB. I have got mine powered through the ISO connector (google for its pinout), but there is also the other white connector which I dont have the pinout for and I believe it requires some connections on this.

I know its an old thread but...

@john55 - is that little red 6 pin header definately the JTAG connection? If not the JTAG points are there on the CPU but there doesnt seem to be much cheap hardware/software which supports the SH4. Have you had any success?

I am dying to dump the flash of the CN+. It runs vxworks, and uses TFFS so should be easy to have a look through, but dont really want to try removing the flash chips in mine just in case. Also the flashimage on the update CD's seems to be compressed.

Dan

Basically you have to buy the dedicated Jtag tool from Hitachi, or what most people do is just take the flash chips off and put them in a reader. The readers are also quite expensive as it is a 32 bit flash part. I have not bothered to fix mine yet, but I have the same problem - corrupt flash.

Also, the Abarth (silver front) CN+ has a different main PCB and different flash chip to the black CN+. I currently have a working Abarth one, and my black one is dead.

Which do you have?

Mine is the abarth one,

from what I can tell from the files on the update CD and the flasher application, all the boards are very similar, same CPU/SDRAM/multimedia processor config, but there are pads all over the board for different headers, different types of flash TSOP / PLCC.

There is also a small serial eeprom on the radio board (2Kbyte) which should be easy enough to dump in circuit, i take it this hold some of the power settings for the CN+.

I have a programmer but im not sure if it works with 32bit flash parts, I used to use it years ago for old cable boxes.

Do you have a pic of the mainboard of the broken CN+?

Dan

The boad is quite similar, same processor etc. slightly different layout and a different part number.
The main difference is instead of one flash chip, there are two, one on each side of the board and are in the empty positions on your board. The flash chip as you have it, is unpopulated on the black ones.

Your old programmer is very unlikely to work.

Mine is the abarth and has the flash chips on either side of the board, does your abarth one have two or one?

I think my board has only one empty position for a larger tsop flash, ill have to check when i get home.

Dan

Just double checked this. My abarth CN+ has 2 x Fujitsu 29DL323TE-90PFTN, this is a 32Mbit flash part which is dual operation 8/16bit. My willem should read these fine.

Dan

I have just checked, and I have a Main board with the same flash part as that. The flash is OK on it, but the main board has another fault.

My black CN+ has two Intel E28F320 J3A110 chips, which are a 32 bit part.

Hi John,

The Intel E28F320J3A-110 is also a 8/16bit flash, it is 32megabit, which is equal to 4 megabytes. This is also a common flash part used in some routers, set top boxes etc. I can be read with a willem programmer which are available quite cheaply. Ive got the datasheet for it if you want it.

I need to order a new tsop adapter for my programmer and a better soldering iron, so when I get those in, ill dump the chips.

Dan