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Firmware Listing

Printer \ Motor Drivers	ESR/30M-Type (Hyrel Stamps)	16A-Type (Encoder Boxes)	BigTree-Type (Hyrel CANBUS)	Hyrel-Type (Hyrel CANBUS)
ESR	ESR_30M_4.203c.dfu	n/a	4.5xxC.dfu	4.5xxC.dfu
30M	ESR_30M_4.203c.dfu	n/a	4.5xxC.dfu	4.5xxC.dfu
EHR	4.5xxC.dfu	4.5xxC.dfu	4.5xxC.dfu	4.5xxC.dfu
16A	n/a	HYDRA_3.203c.dfu	4.5xxC.dfu	4.5xxC.dfu
H21	n/a	HYDRA_3.203c.dfu	4.5xxC.dfu	4.5xxC.dfu

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As of September, 2022 (dispite the confusing naming):

Firmware Versions as of August 2022

Download them from https://hyrel3d.com/updates/2022_DFUs.rar and place them in C:\Repetrel\bin\firmware

ESR and 30M		EHR		16A	H21
< Mar 2021	> Mar 2021	< Mar 2021	> Mar 2021	All	All
EngineSR_30M_4.203c.dfu	Hydra_With_CanMotors_4.500A.dfu	EngineHR_Hydra_4.203c.dfu	Hydra_With_CanMotors_4.500A.dfu	EngineHR_Hydra_4.203c.dfu	Hydra_With_CanMotors_4.500A.dfu

Firmware Listing

Printer Model	Repetrel Version	Firmware
All Hydra Models (3-, 4- and 5- axis)	Repetrel 4.2.561	EngineHR_Hydra_4.203c.dfu (L)
	Repetrel 3.084c	Hydra 3.083m
Engine, High Resolution (EHR)	Repetrel 4.2.561	EngineHR_Hydra_4.203c.dfu (L)
	Repetrel 3.084c	Hydra 3.083m
System 30M (and earlier Systems) and Engine, Standard Resolution (ESR)	Repetrel 4.2.561	EngineSR_30M_4.203c.dfu (L)
	Repetrel 3.084c	Hyrel 3.083m
	Repetrel 2.865	Version 2.415
	Repetrel 1.85	Version 1.85

Main Sections
What is GCode?
Understanding the T
Controlling Movement
Controlling Temperature
Controlling Material Flow
Controlling Position and Offsets
Controlling Lasers and UV Pens
Controlling Spindles and Lathes
Reporting and Diagnostics
Controlling Aux Devices
Other Commands