If you wish to upgrade UniStream panel, Please follow the below steps for proper upgrade or downgrade.

Use the PLC as standalone, Panel and CPU only (No I/O units connected)

In UniLogic, Go to "PLC" menu > UniStream Management >Firmware Manager.

Choose the latest Bin version

Insert a FAT32 formatted flash drive more than 2GB (Disk-On-Key) to your PC and click on "Copy To DOK" button.

When UniLogic recognize your DOK click OK to copy the latest Firmware

This process can take about 10-15 minutes.

When it's done to copy the Firmware, go to the flash drive in your PC ans open the Open the Unistream_Files folder.

Copy the attached file into Unistream_Files folder

Then,  safely remove your DOK from the PC and connect it to the dedicated UniStream USB Host.

when it's done insert the flash drive to UniStream Panel USB host (1 or 2).

In UniStream Panel >UniApp (Touch and hold the upper right corner of the screen for few seconds)

Go to System >Upgrades > mark "Forced" >Upgrade PLC > Upgrade

This process can take 10 -20 minutes.

When it's done download a blank project or Open your project > Perform Rebuild-All from PLC menu > Download All.

Thank you