Hi guys , I found a cheaper way to flash your R53 ECU and my original post was removed ( not sure why I wasn’t selling anything ) .
Send me a pm if interested to know what it takes .
Cheers

 

Ktag is the best

 

Lot of tools can read and write Siemens EMS2000 or Siemens MS5150.(MS5150 equips Mini between 2005-2006)
Galletto 1260, read and write by OBD, no checksum, read time 11 minutes, write time 9 minutes.Price around 15$
Galletto FGTech, read and write by OBD,read and write in Boot mode ,no checksum, same read and write time by OBD as Galletto 1260, in Boot mode around 3 minutes read or write.Price around 50$
MPPS V13, MPPS V16, read and write by OBD, no checksum,read time 3 minutes, write time 1,5minutes.Price around 15$
KES V2,read and write by OBD,checksum in writing,read and write time around 3 minutes.Price around 100$
KTAG 2.25, read and write only Boot mode, checksum in writing.Price around 100$.
Boot mode read mean remove ECU cover and small soldering job.
All these tools can read full flash, read file is 512Kb size.