XPROG-M 5.5 unknown command error fixed

How to solve XPROG-M 5.5 unknown command error ? 

Please follow the manual step by step:

1. Erase chip atmega 64
2. Program eeprom , Flash
3. Set Lock bits and fuse bits. Program lock bits, fuse bits.
4. Copy Xprogbox 5.51 to C:\ and run Xprognew.reg
5. Run XprogDesktop.exe and update .
Customer feedback:

Finaaly, my old xprog-m 5.0 now have the 5.51 version succesfully installed!
I already tested with Infineon xc23xx, Mac7242, SPI, I2C, Microwire eeproms, some 9S12, HC11, HC05 and TMS.
Works great, verify error also fixed with update.
Before this update I can’t read/write the HC05H12, now it’s working!
All authorizations activated.

x-prog-box-ecu-programmer-xprog-m-support-cas4-5m48h

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