Chapter 1 Introducing the PLA-401 v3
PLA-401 v3 User’s Guide
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For PLA v1 models (for example, PLA-400, PLA-401, PLA-470, PLA-491 and so on)
upgrade the firmware version from 1.4.5 to 3.0.5. Refer to the PLA-4XX series
User’s Guide for instructions on how to do this.
For PLA v2 models (for example, PLA400 v2, PLA402 v2, PLA401 v2, PLA470 v2
and so on) make sure the firmware version is 3.0.5.
Note: The PLA v2 models can be upgraded to firmware version 3.3.4. The firmware
will be available for download in ZyXEL’s website (www.zyxel.com).
At the time of writing, PLA-401 v3 can only work with firmware version 3.3.4.
Use Configuration Utility version 3.3.4 to manage PLA v2 and PLA v1 models with
firmware versions 3.0.5.
Note: You cannot downgrade the PLA-401 v3’s firmware to a version earlier than
3.3.4.
This diagram below shows a Powerline network where two PLAs have an earlier
firmware that cannot be managed by the 3.3.4 Configuration Utility. You should
upgrade the firmware of these PLAs.
Figure 2 Wrong Firmware in a Powerline Network
3.3.4
3.0.51.4.5
1.4.5
3.3.4
3.0.5
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