Using JTAG to read/write the flash MMI3G

**deyasoft** · 12th July, 2018, 09:46 AM

Hi Gsmflashch,
I need your help. I did the jtag pinout following your picture. I need your help to flash my dead mmi 3g.
Thanks

**gsmflasch** · 12th July, 2018, 11:28 AM

Originally Posted by deyasoft

Hi Gsmflashch,
I need your help. I did the jtag pinout following your picture. I need your help to flash my dead mmi 3g.
Thanks

I think you need to read complet (my post). If you want to repair few unit then contact me, but if its just for one unit the solution will be expensive for that..

**deyasoft** · 19th July, 2018, 06:20 AM

Originally Posted by gsmflasch

I think you need to read complet (my post). If you want to repair few unit then contact me, but if its just for one unit the solution will be expensive for that..

I just need one in my vehicle. I really need your help. What do you suggest?

**gsmflasch** · 19th July, 2018, 09:29 AM

Originally Posted by deyasoft

I just need one in my vehicle. I really need your help. What do you suggest?

contact me pm. You can send your unit maybe to someone who can repair it..

**deyasoft** · 20th July, 2018, 08:56 PM

Originally Posted by gsmflasch

contact me pm. You can send your unit maybe to someone who can repair it..

I have sent you a pm

**titou43** · 12th September, 2019, 02:56 PM

Hello
I return on this post for contact the professionnals of the MMI 3GP

Is it possible to find the login of a module radio tuner like the MMI (for to access to eprom reading with VCP) ?
It think it is reverse engineering ?

Many thnaks for your responses here or in PM (cost ??)

Best regard

**pindour** · 25th October, 2019, 01:19 PM

Hello,
can you pls help me with settings TopJTAG and Tiao...
Bsdl from Renesas - TopJTAG - error.
Thank you

**Tema8820** · 3rd February, 2020, 10:53 AM

Originally Posted by pindour

Hello,
can you pls help me with settings TopJTAG and Tiao...
Bsdl from Renesas - TopJTAG - error.
Thank you

Hey.
I have the same question.
How to configure BSDL? I have a BSDL error.
Have a successful communication session?
Thanks. Regards.

**Tema8820** · 1st April, 2020, 04:44 PM

How to update v850?

**dec123ua** · 26th May, 2020, 06:57 PM

Originally Posted by Tema8820

How to update v850?

direct connection to MCU and upload correct image v850

**oops1vc** · 13th February, 2021, 12:45 PM

Originally Posted by eprst

this is a dump

How did you get this dump? I tried different options, the processor is silent, does not want to give anything away

**gsmflasch** · 14th February, 2021, 09:17 AM

There is a 100% working solution by jtag. You can repair any 3g/3g+/rns-850 even if complet dead (no hardware fault)

First of all you need this jtag tool;

diygadget.com/tiao-usb-multi-protocol-adapter-jtag-spi-i2c-serial.html

So if anyone need full information and all tools, can contact me pm (full pack with everything for jtag).

Regards

**oops1vc** · 14th February, 2021, 05:30 PM

Originally Posted by Tema8820

Hey.
I have the same question.
How to configure BSDL? I have a BSDL error.
Have a successful communication session?
Thanks. Regards.

bsdl contains a forbidden character, remove it

Originally Posted by dec123ua

direct connection to MCU and upload correct image v850

how to create the right image for v850.
i tried combining together bolo + app, but it did not bring success, mmi does not start, turns with a fan

**predki** · 3rd February, 2022, 09:24 PM

Part. are you able to help repair mmi3g? Would you say how to read jtag or something else v850 and 2xgl512? you can reply to this email. andrzej.jaskulski@onet.pl