Kramer Electronics VS-44HC - Manual (Page 34)

KRAMER: SIMPLE CREATIVE TECHNOLOGY
Flash Memory Upgrade
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Figure 20: Device Selection Window
4. Click the button next to the name of the device and select from the list:
AT89C51RD2:
AT89C51RD2
T89C51RD2
Figure 21: Device Selection window
5. Click OK and select “ Load Hex” from the File menu.