Tips to Write Volvo V70 93C66 Key with Xhorse VVDI2

Question: I need to write key on Volvo V70 1998- with 93С66 and pcf7935 with Xhorse vvdi2 key programmer. When loading eeprom data, free positions 4, 5 and 6 are not available for writing. How to solve this issue?
Vvdi2 Volvo 70 Write Key
1). If write key with xhorse super chip, just generate key from position 1, 2 or 3. No need write back data to immo box.
2). If write key with original key, need to write back data to immo box. Generate key from position 1, 2 or 3.