In an attempt to standardize development across all developers, we'd like all devices to be running the same firmware and would like the flexibility to revert and upgrade. Is it possible to revert the firmware on the nRF52840 DK boards? I see the option the upgrade in J-Link Configurator, but no option to revert
Here is a screenshot of three devices I currently have.

Could anyone point me to documentation on how to acheive this, thank you.