
Maintenance
Maintenance – Software Update
Microsemi PDS-408G Web Management User Guide Ver. 1.0.1, 03-2019
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17.3.3
Recovering from endless unit reboot after software update
In case of a rare failure, in which the unit enters endless software reboot cycles after software update
preventing access to the web interface, it is still possible to revert to the previous version before
performing software update by executing the following steps:
1. Connect to the unit USB interface with a USB
Serial Virtual COMM interface with baud rate of
115200.
2. Upon Switch reboot, press CTRL+C, to stop the boot from launching the Switch software.
A
RedBoot>
prompt should appear.
3. Type
fis swap linux linux.bk
to revert the Switch to the older software version.
4. Type
reset
to restart the Switch using the reverted software version.
Figure 17-7: Recovering from endless reboot after software update