GS1900 older FW?
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Yes, but the release notes for 2.70 says:
*Zyxel recommends GS1900 switches with the serial number of S21XXXXXXXXXX
(or later) to operate on V2.70 firmware (minimum) for compatibility issues across
multiple hardware revisions. Attempting to operate with prior firmware will
encounter system failure in powering up powered devices. More details please
refer to ZYXEL Community.My switch has a lower serial number (S18XXXXXXXXXX).
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Hi @pawa,
Since the GS1900-24HP has been EOL, the latest firmware for this model is V2.70(AAHM.3).
And there's no issue upgrading from V2.20(AAHM.0) to V2.70(AAHM.3). Please feel free to upgrade.
If there's any problem, please don't hesitate to ask.
Zyxel Melen0
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