Firmware compatibility with Bvserial.exe

When I connect to my BV500 with BvSerial I get the following message.

System cold start
**********************************************
** BV500 _ rookie installed Version 2.5
etc
***********************************************
ok

I type ".edit" and I then get

Version 2.3 and above required for this version of the IDE
Update Bypic or use an older BvSerial

What version of firmware should I be using ?

There are two options:
1) update the firmware on the BV500 (*recommended)
2) use BVserial version 15 or less, version 15 is still on the website (http://www.byvac.com/index.php/Downloads)

I would however update the firmware to 2.32 (http://www.bypic.co.uk/index.php/ByPic_Firmware). Just make sure that the DTR line is connect, i.e. when you press .r on BVserial it resets the BV500, this connection is normally optional but the boot loader requires it.

I've downloaded the 2.32 firmware, which file should I use for the MX150 pic?

I didn't know it was an MX150. The 2.32 only wotks with the MX170 - it has more Flash and RAM.

In that case there is no firmware update so go with option 2, BVSerial (http://www.byvac.com/index.php/Downloads)15 should work okay, if not let me know you may need an older version.

I've tried v15, It opens Pspad, but I now get the same error message when I press the F4 button

Do you have an older version I could try or could you point me to the old manual instruction for transferring a program.

In that case I think you may need to use BV_COM2 (http://www.byvac.com/index.php/Downloads). The documentation for it is here: [www.bypic.co.uk]