So you have three ways to do it. Tachometer is Jaeger (half fis - BIG Crap)...
One way is dump motor ecu 24c04 and IMMO off it, so car can starts in every condition, and it can be stolen easy in every condition
Other way is find 'VagTacho' and pull code over OBD, that is the most safety way.
Third way is with normal programmer - Willem, TL866, Batronix, etc. Eeprom is stored under tachodials, so you need to remove needles, but keep in mind that Jaeger needles are made from very cheap plastic, and they starts to swing after removal.
So choose your way and share files with us, to help