DES-3526 firmware 2.00B19 (Released: Oct. 2004)

Fixed:
1. Fixed SIM gets wrong copyright.
2. Fixed web gets wrong front panel.
3. Fixed port description "random characters" problem, which may result in  
4. Fixed the "Login Method List setting" in "Access Authentication Settings" from WebUI problem. 
   CLI/Telnet has no such problem. 
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DES-3550 firmware 2.00B16 (Released: Sept., 2004)

1. Support (second-sourcing) "Spansion" & "Winbond" flash memory
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DES-3526 firmware 2.00B15 (Released: Aug, 2004)

Fixed: 
1. Fix system hang issue while changing 1x mode from PAP to EAP.
2. Fix DES-3526 packet loss when disable/enable no-connection port
3. Fix Port STP configurations lose after load default and save root.
   a. Do not retrieve hello time parameter in 1d mode
   b. Cost would be changed as auto while STP version changed.
4. IGMP snooping cannot disable via CLI command,
5. STP configurations instance lose after system reboot
6. Fix Giga port cannot forwarding frames in the first link up after boot up. 
7. Fix stop forwarding packet after a period of running problem.
(for 6, 7, re-pluging any port can recover the symptom)
8. Fix web lacp page error message and incorrect lacp information
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DES-3526 Firmware 2.00B08 (released: June, 2004)

New Features:
+ Support SSH2
+ Support Radius Authentication on Switch Admin access
+ Support SSL.
+ Support 802.1s (MSTP, Multiple Spanning Tree Protocol)

Fixed:
+ Device hangup when port 80 Web attack.
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DES-3526 Firmware 1.00B17 (Released: April, 2004)

Fixes: 
1. SIM member device firmware download problem at 32 member environment.
2. SIM 32 members re-config problem
3. SIM device hanging up problem.
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DES-3526 firmware 1.00B15 (Mar., 2004)

First release version.  For the features, please refer to the datasheet.