User's Manual

PM451 Android 9.0 User Manual
42
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System Maintenance
OS update from OTG Port
PM451 supports the USB OTG feature.
1. Prepare a formatted USB flash drive for OS update
2. Copy OS image file to the root folder of the flash drive
3. Connect the flash drive to the PM451
4. Go to
Settings
>
System
>
Advanced
>
System Update
5. Check if the OS image file shows up in
AVAILABLE VERSIONS
6. Tap
UPDATE
to start the update process
OS update via FOTA
If you can connect the network, you can use the FOTA server for the update.
1. Go to
Settings
>
System
>
Advanced
>
System Update
2. Tap
FOTA
tab or Swipe left to move to
FOTA
tab. If there is an OS version newer than device's
one, the server shows the new OS information
3. Tap
Download
Figure 51 FOTA update tab