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| − | #You must have the drivers for the PRO-668, PRO-18 or PSR-800 (whichever scanner you are updating) functioning.
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| − | #If you wish to use version 4.5 of the firmware, someone must send you a copy. Version 4.6 will be downloaded by using the correct version of GREFWtool (see the file size note below)
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| − | #Install [https://github.com/LinuxSheeple-E/GREFwTool/wiki GREFwTool]. Note the various versions are dependent on the firmware and your OS. The version history is found at the bottom of that page
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| − | ##If you are installing firmware version 4.5, use version 0.2.0.3
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| − | ##If you are installing firmware version 4.6, the file size '''must be''' 368340 bytes. A file size of 524292 bytes will not work. The file name is ''WS1080e_U4.6 bin''
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| − | ###Make sure you get version 0.3.1.5 of GREFWtool. This is especially important if you are running WinXP. If you have version 0.3.0.4 from a previous installation, there's no need to upgrade it. Versions 0.3x will handle earlier firmware versions if needed.
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| − | #If you don't already have it,
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| − | ##Obtain the driver for the WS1080. It can be found [https://whistlergroup.com/collections/scanner-downloads/products/ws1080-ws1088-pc-driver here]
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| − | ##Obtain and install the [https://whistlergroup.com/collections/scanner-downloads/products/ez-scan-for-ws1080-ws1088 EZScan] software for the WS1080
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| − | #'''Always''' back up your data before proceeding
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