Switch 4210 V3.01.09 Release NotesFebruary 27, 2009 Page 36 of 43LSOD05699z First found-in version: V3.01.02z Condition:Nonez Description:SW4210 cannot recognize port hardware types for 100Base-LX10 SFP, 100Base-FX SFP, 100Base-BX10-U and D SFP modules.Resolved Problems in V3.01.02LSOD05400z First found-in version: V3.01.01z Condition:POE device is under very low temperature environments.z Description:The device can not start up normally.Resolved Problems in V3.01.01NoneRelated DocumentationFor the most up-to-date version of documentation:1) Go to http://www.3Com.com/downloads2) Select Documentation for Type of File and select Product Category.Software UpgradingCaution:Upgrade software only when necessary and under the guidance of a technical supportengineer.Normally, the software of 4210 Ethernet Switch is upgraded via serial port. However, this method israther slow and very time-consuming. In addition, in this method, users either have to upgrade theswitches at the installation sites or gather all the switches to upgrade one by one, whichever willconsume enormous manpower. To solve the problem, 4210 Ethernet Switch uses the TFTP and FTPmodules, which enable you to upgrade software and download files fast and flexibly.