Dear Illya,

the Keithley 2001, I just got, came with firmware version B17 which is not archived on your site yet. It differs from the 2001M B17 firmware. So here it is:

  2001 Version 61.1, released Thu Dec 11 08:44:58 EST 2008

The EPROMS are marked "2001-803B17 ODD" and "2001-804B17 EVEN".

Unfortunately my unit has a loud transformer hum, a bit of corrosion around R810 on the A/D board and the fan filter is missing. Allthough it looks quite yellowed on the outside, it seems to be produced 2017 or later. Will have to 

Kind Regards
005