Version:  UPS 16.6(SCL)
Applicable SKUs:
================
ID 1048, All standard SKUs beginning with SCL prefixes.

SCL: SCL500RM1UNC, SCL500RMI1UNC 

This revision optimizes charging sequence for saving more energy.

Change logs:
1.	Optimize charging sequence for saving more energy.

Note: Smart-UPS Firmware Upgrade Wizard tool 
always includes the latest released firmware and helps upgrade the UPS code. Link to tool - https://www.apc.com/us/en/faqs/FA279197/



Version:  UPS 16.5(SCL)
Applicable SKUs:
================
ID 1048, All standard SKUs beginning with SCL prefixes.

SCL: SCL500RM1UNC, SCL500RMI1UNC 

This revision provides stronger network data security protection via the below mechanisms to prevent malicious firmware from being upgraded to the UPS through communication interface ports.

Change logs:
1.	The mechanism of firmware signing adds to the code in order to protect the UPS from malicious firmware spoofs.

Note: Smart-UPS Firmware Upgrade Wizard tool 
always includes the latest released firmware and helps upgrade the UPS code via serial(RS232) port; Upgrade via USB port from this tool is not recommended.
Link to tool - https://www.apc.com/us/en/faqs/FA279197/



Initial Released Version: UPS 16.1(SCL)


Compatibility:
==============
Power Chute Business Edition v9.2
FUW (Firmware Upgrade Wizard) Tool v4.2.1