Original announcement: http://support.supremainc.com/discussions/topics/24000005287

Dear Valued Partners,

This notification is for caution of FW version downgrade&upgrade.

There will be FW compatibility issue if you downgrade current firmware from higher version firmware to previous version.

The device will be malfunction and you couldn’t restore it without Suprema repair service.

We do not guarantee the firmware version downgrade.

If you would like to downgrade the version of firmware of a device, please contact us with the purpose.

If you have a customization FW, you should check current version of the firmware before downloading the firmware.

Please contact us if the version of customization firmware is lower than current firmware which is loaded into your device.