V1.00.05 has 3 firmware images.  Each supports a different language for the WEB GUI:  English, German, and Japanese. 

The supported language is identified by the suffix of image filename:

1. EN -  English.
2. GR - German (Deutsch).
3. JP - Japanese (日文).

New Features and Modification:

• The default admin password must be changed to a unique password during the first login.
• Changes the default Management Mode (System > Management > Switch Management Mode) from Web browser and Plus Utility to Web browser only.

Known Issues:

• To support WEB GUI, all HTTP packets are forwarded to the embedded CPU.  With Flow Control enabled, throughput will be impacted if the rate is higher than the CPU can handle.
• Configuration obtained from the Plus Utility cannot be used by Web GUI and vice versa. 
• IGMP dynamic router port does not timeout exactly at 300 seconds.  It could be anywhere from 300 to 600 seconds.
• IGMP host timeout is not exactly 260 seconds.  It could be anywhere from 260 to 520 seconds.

Download Link :

 https://www.downloads.netgear.com/files/GDC/GS308E/GS308E_V1.00.05EN.zip - EN only

 https://www.downloads.netgear.com/files/GDC/GS308E/GS308E_V1.00.05GR.zip - Germany only

 https://www.downloads.netgear.com/files/GDC/GS308E/GS308E_V1.00.05JP.zip - Japan only

Firmware Update Instructions:

To update your product’s firmware, follow the instructions in your product’s user manual. To find your user manual, visit https://www.netgear.com/support/, enter your model number in the search box, and click the Documentation button on the product page.