5 Firmware update
5.1 Preparing the USB stick
The firmware of all the CH Precision units can be updated using the USB port located at the back of the unit. Before starting the
firmware update, it is necessary to load a USB stick with files containing the new firmware. Use the FAT32 formatted USB 2.0 stick
provided with you M1.1 . Please note that some USB sticks might not be detected by the M1.1 USB port. CH Precision recommends
the use of Sandisk USB 2.0 sticks such as the one delivered with the unit.
The following procedure describes how to load the USB stick with the correct files:
1. Download the latest M1.1 firmware file from
www.ch-precision.com
2. Decompress the
.zip
file and copy the decompressed files to the root of your USB stick. After doing so, your USB stick
should contain the following files:
M1_xxx.ds1
M1_xxx.mc1
M1_xxx.ol1
where '
xxx
' indicates the firmware revision.
Make sure all these files are present at the root of your USB stick, and that only one version of these files is present. Any missing
file will make the firmware update procedure fail, while multiple versions of the same unit's firmware can lead to unstable M1.1
behavior after update.
5.2 Updating the unit's firmware
1. Perform the operations described in section 5.1
2. Connect the USB stick to the USB port located at the back of your M1.1 unit
3. Navigate to the FACTORY SETTINGS menu (see section 4) and select the UPDATE FIRMWARE item
4. Start the Firmware Update process by pushing the encoder button. Please note that the unit will perform a Reset (the
display briefly turns off and on) during the procedure
5. Once the firmware update is complete, the unit automatically goes into Standby mode. Remove the USB stick and turn
the unit on. The new firmware is now active. To verify that the firmware update is effective, navigate to the FACTORY
SETTINGS menu and select the FIRMWARE VERSION item. The displayed firmware revision should match the firmware
revision on the files copied to the USB stick
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M1.1 User Manual
Rev 3.0
