on 7077==>7100 Upgrade system refused on a Laptop -- said MMC O2 XD /SD driver incompatable and showed a red 'X'. Built in MMC card reader.
I've got the driver file in an 'EXE' file -- can't be bothered to extract driver for 7100 SCAN and load driver.
Just "Uninstall" from your 7077 installation (don't click delete software box').
Now run setup.exe again. (Use Device Manager to "uninstall the driver"