Would it be possible to flash an ECU that has the EPK = 36/1/ME7.5/5/4018.10//F19w2/Dst01o// with a file that has EPK = 42/1/ME7.5/5/4018.10//F19x6/Dst02o/101299/
Bootrom is the same, and the car/engine is the same, 225 APX Audi TT

-> Bootrom Version = 05.12
-> EPK = 36/1/ME7.5/5/4018.10//F19w2/Dst01o//
-> Contents of ECUID data table:
   - '0261207030'         (SSECUHN)         
   - '1037354178'         (SSECUSN)         
   - '8N0906018AE '       (VAG part number)
   - '0001'               (VAG sw number)   
   - '1.8L R4/5VT         '   (engine id)       
-> Contents of ECUID data table:
   - 'HW_MAN004'   

-> Bootrom Version = 05.12
-> EPK = 42/1/ME7.5/5/4018.10//F19x6/Dst02o/101299/
-> Contents of ECUID data table:
   - '0261206797'         (SSECUHN)         
   - '1037354094'         (SSECUSN)         
   - '8L0906018M  '       (VAG part number)
   - '0002'               (VAG sw number)   
   - '1.8L R4/5VT     '   (engine id)       
-> Contents of ECUID data table:
   - 'HW_MAN004'               

I have a full definition for the 8L0906018M ecu.