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HEM27/44 Firmware

Firmware for HEM27/44 Series Mount (7/23/2023)

No firmware upgrade is needed if your mount works properly. If you have an HEM44 mount, please upgrade the firmware to this latest version.

Please read the Release Notes before performing any firmware upgrades. Follow the Upgrade Instruction carefully. Loading the wrong file into the system may cause the mount inoperable!

Encoder calibration is needed for a mount with a high precision encoder (EC version) after the firmware upgrade.

iOptron Strain Wave Gear mount firmware upgrade instruction
iOptron Upgrade Utility V3.21
HEM Firmware Package (incl. 8409 HC) (V230420)
Prolific PL2303 VCP Driver, or go to Prolific website to download the VCP driver
HEM Mount Firmware Upgrade History