# Trouble shooting

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Situation

Download failure in Update Tool (since CPA v4.0.9) or Firmware Loader

Valve shows rotating 8 on display (valve is in bootloader mode) after start download a firmware over CPA.

Rotating 8 on display

Solution

•Disconnect the USB cable

•Disconnect the power cable

•Reconnect the USB cable

•Reconnect the power cable

If the CPA now reconnects

•Open Update Tool (since CPA v4.0.9) or Firmware Loader

•Start firmware download again

If the CPA does not reconnect

•Start CPA local (computer) if no local version is available than see Update

•Open Offline CPA

•Open Update Tool (since CPA v4.0.9) or Firmware Loader

•Select the valve firmware and start download

•If the update fails immediately could it be possible that it is a spare masterboard? In this case the update is locked and will not work.

•(Optional) Open CPA again

•(Optional) Open Update Tool

•(Optional) Select other firmware for download (example Motion Controller Firmware)

•Problem should now be solved and otherwise start the download again