Huawei SmartAX MT882 User Manual page 82

Figure 4-24 Firmware Upgrade
Upgrade File: type in the full path and file name of the firmware
file to be uploaded. Alternatively you may click the Browse button to
search for the file on your system.
When the file names have been entered, click the Upload
button to start loading the firmware file. If the upload is successful, a
message informs you that it was successfully loaded. If the firmware
does not load, an error message informs you to try the upload again.
Check the file names and attempt to upload again. If the file still is not
loaded, reboot the device and try again.
Caution:
Do not power off the MT882 during the firmware upgrade process.
Otherwise, the configuration in the flash could be damaged.
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