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Micron MR6xx Receiver Versions

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These tables lists hardware and firmware versions for the Micron MR6xx range of receivers. The hardware version is marked on the receiver circuit board. The firmware version is identified by a letter written on one of the chips - e.g. 'D' indicates firmware version 1.4.

MR601

DSM2/DSMX receiver, 2.7V-12V, 1.2A max motor current, 2 x F switches, 3 x P auxiliary outputs.

MR601 Hardware

VersionRelease Date 
MR601a2023-09-29First release

MR601 Firmware

Firmware VersionIdentRelease Date User Manual ConfigurationProgramming 
1.5 G 2023-09-29 mr601-1.5-info mr601-1.5-config mr601-1.5-progtable First release
1.6 H 2023-11-08 mr601-1.6-info mr601-1.5-config mr601-1.5-progtable DSMX improvements, bug fixes for power-on-changes
1.7 I 2023-11-20 mr601-1.7-info mr601-1.5-config mr601-1.5-progtable Power-on change for ESC PWM frequency
1.8 J 2024-04-24 mr601-1.7-info mr601-1.5-config mr601-1.5-progtable Bug fixes to ESC low throttle response
1.8.1 J1 2024-05-09 mr601-1.7-info mr601-1.5-config mr601-1.5-progtable Bug fix to L pad LVC
1.9 K TBD mr601-1.7-info mr601-1.5-config mr601-1.5-progtable Fixes for slow servo

MR603 Hardware

VersionRelease Date 
MR603a2022-06-10First release
MR603b2022-08-08Change to motor driver due to component shortages
MR603b22022-09-26Change to avr64db32 CPU
MR603c2023-08-25CYRF6936 radio chip

MR603 Firmware

Firmware VersionIdentRelease Date User Manual ConfigurationProgramming 
1.1 A 2022-06-10 mr603-1.1-info mr603-1.2-config mr603-1.2-progtable Initial release, core ESC, Servo and On/Off functionality.
1.2 B 2022-07-16 mr603-1.1-info mr603-1.2-config mr603-1.2-progtable Bug fix release for sleep behaviour and bi-directional LED on P1/P2.
1.2.1 B2 2022-09-07 mr603-1.1-info mr603-1.2-config mr603-1.2-progtable Configuration changes for distributor RCS.
1.3 C 2022-09-26 mr603-1.1-info mr603-1.2-config mr603-1.2-progtable Support for avr64db32 CPU on mr603b2.
1.4 D 2023-01-10 mr603-1.4-info mr603-1.4-config mr603-1.4-progtable Latch3 on/off behaviour, indicator and hazard flashers, travel automation and new P1/P2 reset, save backup or ch2/ch4 prog entry options.
1.4.1 E 2023-02-17 mr603-1.4-info mr603-1.4-config mr603-1.4.1-progtable Fix pause bug in shuttle modes and add program function to set reactivate time.
1.4.2 F 2023-03-31 mr603-1.4-info mr603-1.4-config mr603-1.4.2-progtable Port grouping for synchronised action
1.5 G 2023-08-25 mr603-1.5-info mr603-1.5-config mr603-1.5-progtable Faster startup, remove selected config display, single LED with fast flash while binding, programming function to expanded servo range
1.6 H 2023-11-08 mr603-1.5-info mr603-1.5-config mr603-1.5-progtable DSMX improvements, bug fixes for power-on-changes
1.7 I 2023-01-01 mr603-1.5-info mr603-1.5-config mr603-1.5-progtable Bug fixes to automation (shuttle mode); auto min/max throttle range
1.8 J 2024-04-24 mr603-1.5-info mr603-1.5-config mr603-1.5-progtable Bug fixes to ESC low throttle response
1.8.1 J1 2024-05-09 mr603-1.5-info mr603-1.5-config mr603-1.5-progtable Bug fix to L pad LVC
1.8.2 J2 TBD mr603-1.5-info mr603-1.5-config mr603-1.6-progtable Additional servo functions
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