Pioneer AVH-X1700S System Firmware Update Instructions - Page 5
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9. Read the "WARNING," then touch the [Start] button to start the update process. If it shows "ERROR" on
the display, try another USB device.
10. After starting, there will be a progress bar while updating.
image below.)
*The version of this picture is just reference.
11. Display will show "It succeeded..." when the update is complete.
(Please note: version number will differ from