Alpine CDE-193BT Update Manual page 7

7. At first, unit shut down and restart.
The display show „UPD START" and later „UPD XX%".
8. "UPD XX%" will appear on the screen for approximately 10 minutes.
Please do not power off the unit and do not push any button, while the
unit displays
9. "Updated" will appear on the display.
10. The checksum "M_31F90C11" will show in the display
11. Turn off ACC, remove the USB memory stick and turn ACC on
"UPDXX"%
.
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