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Sirius software update for CZ301

This software improves the following symptoms.

*trouble when SIRIUS SCC1 is connecting


*Please confirm software version of your unit before updating.

Please refer below to step "3. Confirm result."

There is no need to update your unit if the software meets the conditions below.

・When the software version is "VM-0810-1U".

e.g. If the software version of your unit is "VM-1208-1U" or "VM-0118-1U" , You need to update by "VM-0810-1U".

If the software version of your unit is ”VM-0810-1U”, you do not need to update.

*Do not POWER-OFF the unit during update.

*Do not operate the unit while the unit is updating.

*When the unit is updated, radio preset frequencies, audio settings, and adjustment settings stored in memory are cleared.

Please record all stored in memory before update.


1.1. Download

Please download ”update_tool for CZ301” file.

The file is zip-compressed , and you need to unzip them on your computer before copying to an EMPTY USB memory device.

■update_tool for CZ301 (47kB)

When this file is unzipped, One file is shown in ”update_tool for CZ301 sirius” folder.

*CZ501MCU.BIN (129kB)



1) Please copy "CZ501MCU.BIN" to an empty USB memory device from your computer.
2) Insert the USB memory device to the USB slot on the CZ301 when the unit is POWER-ON. And then the LCD will indicate “MCU UPG.”.
3) Please keep waiting and DO NOT POWER OFF the unit untill the unit reset itself automatically.
4) Remove the USB memory device from the unit.
5) Finished update. Please check the software version for your unit.

3.Confirm result

1) Please turn on the unit. While in Tuner-mode, Pressand hold the VOLUME knob and preset button “6”.
2) Confirm that the version should be "VM-0810-1U".

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