MSefi.com read only forum (Jan.15,2018)

Got a little further but getting this error message:

Reading C:/Program Files/MegaSquirt/Firmware/MS-II/Monitor_v2.33.abs.s19:
Detected MS-II (HCS12) code.
Entry point: 0x0000
Code range : 0x4000-0x3cafc0
File read successfully.

Opened comm port 2 at 115200.
ERROR: Unknown error status response, e=0x53 Elapsed time: 0.32 seconds

Also, in the Device Manager it says COM1, but that gives no response, COM2 does.

Any ideas would be appreciated.

I assume you have the boot header jumper installed?

Ken

Yes, Jumper over 2 pins. 7.8V at stimulator, not great but should communicate.