New 1.2.20 Fw

[billman]

I have V3.3_n001441 :-(

From where are you from?

I am located in Greece.

[Seight-v8]

so I am still at a loss on how to actual obtain the boot loader in the first place!!!

If you like to do the work by you self then buy a USB boot loader

can this be done via the vems shop???....or another route?

Only problem I have is that I am not the original purchaser....as the unit was bought second hand.....so can I still do this?

cheers

scott

[jrussell]

so I am still at a loss on how to actual obtain the boot loader in the first place!!!

Send an email to info@vems.hu if you're in Europe. Ask for a uhex bootloader, and provide your ECU s/n.

[Seight-v8]

sure, i emailed them over a week ago, and still no reply.....

Like the last email I sent over the GPS....never had a reply....

This is fast becoming my biggest problem with the whole vems thing.....lack of information & help...

frustrating when all I want to do is move on....and get things working

cheers

scott

[Seight-v8]

anyone managed to upgrade the bootloader yet?

I am still waiting from a HQ reply to my emails.......3 weeks and waiting.

scott

[billman]

I think they should simply offer it further for the older hex also. Is it that much more work? Are there any benefits for uhex?

[Seight-v8]

ok, so I've done it, I have now upgraded my bootloader to the uhex one.

thanks to marcell for sending me some information & help.

So this is what I did.

Downgraded firmware to 1.1.94 (bootloader upgrade) version using firmware wizard, then using isp cable set the lock fuse to allow bootloader upgrade using avrdude....
then used bootloader upgrade wizard from firmware menu, which did the rest, then loaded firmware v1.2.21 to ecu....

wow don't know what I was worried about.....lol....not the easiest thing I've ever done with my car....but few glad its over.

good luck to anyone else that attempts it, but looking forward to driving my car again during the summer

thanks for everyones input.

scott

[Arvid]

Can you forward the information to me?  I have made a ISP cable to set the lock fuse. 

Arvid.

[VEMS]

Hello Arvid,

The automated bootloader upgrade procedure only works when you have been given authorization on the bootloader upgrade server. Always contact info@vems.hu (make sure to mention ecu serial number) first.

Best regards, Dave

[Seight-v8]

yes this must be what marcel did for me, when I emailed....

He did also explain, there is work to be done with the bootloader upgrade for people using vems.

regards

scott

[lost]

Befoe starting bootloader upgrade procedure from vems (1.1.94) is it enough to just lock one "3c" fuse using:
avrdude -v -c bsd -p m128 -U lock:w:0x3c:m

Or there are other fuses?

[Seight-v8]

There are more fuses yes, but the 3C one is the only one you need to unlock to upgrade the bootloader.

The others are not required to upgrade the bootloader.

regards

scott

[lost]

I have locked 3c fuse, downgraded to bootloader upgrade firmware, and it look like there is problem with server, or have no permission to get the bootloader.
I have v3.3_n002183 Vems board.

Can anyone from vems HQ to fix the problem?

[fphil]

Lost: hope your problem is solved by now.

On my side, I gave a look to the update process for the bench ecu. If I had Internet where the bench is I could try to udate the bootoader from the server, however I dont know how to lock the 3C fuse ;p) (paraphrasing "si j'avais des oeufs je ferais une omelette au jambon, mais je n'ai pas de jambon")

If someone can tell the bootloader update procedure with and without the server download, step by step, in a technical way, this could be probably helpful for a bunch of people.

Philippe

[lost]

You need to use something like usbasp programer with 10 to 6 pin converter, with disabled jumper to vcc voltage pin, connect it to ISPI pins on vems board, power up vems from ec36 (dont foget to use 2 ground wires connected together, one is sensor ground, other is common groud), install drivers for usbasp, install avrdude, and then id CMD prompt just enter "avrdude -v -c usbasp -p m128 -U lock:w:0x3c:m"  and it will lock fuse 3c. now you can power down everything and update vems to 1.1.94 bootloader update firmware, and then use, bootloader upgrade tool from vemstune, and then you will probably get stuck same as me, as no one responds to emails etc I have sent emails before with questions how to upgrade, and nothing.

note: if you use stk200 cable or something else then you just replace "-c usbasp" to "-c stk200"