How to use Firmware Upgrade Utility

Firmware Upgrade Procedure

FUU “Firmware Upgrade Utility” is SpringCard’s all-in-one software to flash the firmware of most of the product families.

FUU could be use to flash the : H663, E663, S663 and K663 families.

First of all you’ll need to download the Firmware Upgrade Utility software : https://www.springcard.com/fr/download/find/file/su13168

Once it’s installed, launch it. You will see that window

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