I have recently started trying to tune the ECU in my 2001 E39 540i 6-speed manual.
Whilst the Daten files are easy to find and useful when trying different OEM maps, this requires a compatible ECU software already on the ECU, and the BMW software to update the ECU.

I have forced a few different software versions onto my ECU using the BMW software (WINFKP) then boot read the full 512kb file and virginised it so the bin files I am posting can be applied to an ME7.2 ECU via boot made and then just carry out a EWS sync.

This file is software version 7533585_ circa 2002 US E39 540 6 speed manual, full 512kb bootmode and virginised.