Hello, please forgive my broken English.
I need your help and guidance.
I'm from China,my Focus mk2.5 from 2009,rom 0303, I want update to 0509 by ELMconfig .
The ELM327 is set to 38400 bit,But can not upgrade successfully.
May I ask how you did it, help me!
Thank you very much.
I have succesfully upgraded the MK2.5 instrument cluster outside of the car before it was programmed into my MK2.
I have connected a 12 volt power source to the instrument cluster and the ELM327 interface and connected the HS-CAN bus wiring between the instrument cluster ande the ELM327 interface.
After this i have disabled the screen saver, internet connection and anti virus/firewall software. The upgrade procedure worked without any problems.
I have read that European and Asian Focus MK2.5 instrument clusters are made by different manufacturers. Maybe the European firmware isn't compatible with your instrument cluster.