Fronius Symo Advanced 10.0-3 208-240 Instructions De Service page 36

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To ensure problem-free updates of inverter software, the USB thumb drive should
have no hidden partitions and no encryption (see the chapter "Suitable USB Thumb
Drives").
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The inverter begins copying the data.
'BOOT' and the save progress (%) of the individual tests are displayed until the data for all
electronic components has been copied.
Once the data has been copied, the inverter updates the required electronic components
in succession.
'BOOT', the affected component and the update progress (%) are displayed.
The inverter updates the display in the last step.
The display remains dark for approx. 1 minute, the control and status LEDs flash.
Once the firmware update is complete, the inverter switches to the Startup phase and then
to grid power feed operation. Remove the USB thumb drive using the 'Safely remove hard-
ware' function.
Individual settings in the Setup menu are retained when the inverter firmware is updated.
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Obtain the 'froxxxxx.upd' firmware update file
(e.g. at http://www.fronius.com; xxxxx stands for the respective version number)
NOTE!
Save the firmware update file to the highest data level of the USB thumb drive
Open the lid of the data communication area on the inverter
Insert the USB thumb drive with the firmware update file into the USB socket in the
inverter data communication area
In the Setup menu, go to 'USB' and select 'Software Update'
Press the 'Enter' key
Wait until the comparisons of the current software version on the inverter and the new
firmware version are displayed:
- 1st page: Recerbo software (LCD), key controller software (KEY), country setup
version (Set)
- 2nd page: Software power module (PS1, PS2)
Press the 'Enter' function key at the end of each page