I assume this is a gift from the past 5/2018, that I become aware of it at 2021
New link too ...
https://www.apc.com/shop/gr/en/products//P-SFSUWIZ421and
https://www.apc.com/us/en/faqs/FA279197/Smart-UPS Firmware Upgrade Wizard v4.2.1==========================
Previous Released Version:
==========================
UPS 10.0
Applicable SKUs:
================
SMC 120V SKUs (serial numbers AS1209 and later)
SMC 230V SKUs
SMC 120V TW SKUs
Compatibility:
==============
PCBE 9.1.1
NMC SUMX 6.2.1 (only for TW SKUs.)
Release Notes: (UPS 12.0)=========================
1.Show 100% state of charge when new battery installed.
2.Improved self-test event logging
3.Add support for SMC TW Skus.
4.Increased upper end of allowed limits for Minimum Return Runtime, and Load Shed Runtime Remaining to match other Smart-UPS
Release Notes: (UPS 10.0)
=========================
1.To improve the LCD response after a fault is cleared allowing it to go back to normal operation.
2.To improve the transferring from GREEN to SELFTEST and avoid improper message generated by customer server.
3.To improve the LCD Speaker symbol to work correct when enable from Simulator
4.To improve the Transfer-point should vary from PCBE Setting.