Warning: The version to be flashed is older than the current one,
therefore the default password and user are going to be set. The
device will be automatically rebooted...
This will reset the device in its factory version and all your modi-
fications will be lost
Do you want to continue? [y/N] ?
Note: Please check wrz_flashfw -h to get more information about the vari-
ous arguments accepted by this tool.
8.3 Recovery Mode
If an error has occurred (e.g., power down, wrong firmware) during a firmware update pro-
cedure the device might not be able to boot from the SD card and will enter itself into a
recovery mode.
This recovery mode consists of a minimal Linux stored into internal memory of the equip-
ment that allows to:
Reflash the device with another firmware.
Recover configuration (if possible).
Clean/format SD remotely.
Once the device has been booted in recovery mode, it should apply the network con-
figuration previously saved in the .config file. However, it might occasionally be impossible
to recover the network configuration. In those cases, the device will be accessible using the
default network parameters ("Default Configuration" on page20) or through front USB-
UART serial connection.
The following actions might be considered to try to repair the device. It is recommended to
try them in the given order:
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CHAPTER 8 • WR-Z16 User Manual Rev. v3.4
8.3 Recovery Mode
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