RCD310 more precisely? Maybe you can find something here
RCD_tools help file V2.0
Orange 5 USB software by pavel-pervomaysk
VAG Group radio by Blaupunkt
70F3353 (58) + 95128 & 70F3356 + 95128.
Connect external 12 V to the radio unit!
First step – read MCU NEC and save Flash file as Flash.bin
NEC
EEPROM
D70F335(x)
M95128
Volkswagen & Seat RCD310, Skoda SWING
uPD70F3358 & M95128
Volkswagen Radio Low EU BVX
uPD70F3353 & M95128
Volkswagen Multivan Radio Low EU
uPD70F3358 & M95128
Seat Ultra Low SE250 6J0 035 153B
uPD70F3353 & M95128
Volkswagen RCD510, Skoda BOLERO
uPD70F3356 & M95128
Features:
Calculating or Changing CODE
Reset Counter attempts
Regards