Weidmuller WI-I/O-9-U2: Wireless Mesh I/O & Gateway User Manual V1.2.2 - Manual (Page 89)

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Upgrade Procedure
1. Prior to performing upgrade note the current firmware version of the WI-I/O 9-
U2 by connecting to the modules home webpage. This will allow you to
compare this version with the final version to confirm the upgrade procedure
has been performed successfully.
2. Remove power from WI-I/O 9-U2 if it is currently powered on,
3. Remove small Hatch Cover on right hand
side of Module (If looking front on) which
will reveal a USB port and switches.
4. Plug USB stick into USB port and apply
power to the WI-I/O 9-U2 Module,
5.
The ‘PWR’ LED will flash as per Figure 79 -
Firmware Upgrade LED Indications below.
6. When complete, remove USB stick from WI-I/O 9-U2 and refit the hatch
cover.
7. Upgrade is now complete; Modbus Feature Key and Configuration should not
have been changed or erased during this process.
DO NOT remove the Flash drive or interrupt the power to the module while
this is happening. If the upgrade process is interrupted module could
become unserviceable and will need to be returned to WEIDMULLER for
repair.
Figure 76- firmware version
Figure 78 - Firmware Upgrade LED Indications
Figure 77 - Side access panel