Release Notes for Smart-UPS & 1-Phase Symmetra Firmware v3.4.1.1

SwathiNaidu · ‎2025-12-01

Affected Revision Levels

Component	File	Details
Smart-UPS Application	Windows: snst_nmc3_su_3-4-1-1.exe Linux & macOS: snst_nmc3_su_3-4-1-1.tar.gz	UPS Application for Smart-UPS, Smart-UPS RT, Smart-UPS VT, MGE Galaxy 3500.
Symmetra Application	Windows: snst_nmc3_sy_3-4-1-1.exe Linux & macOS: snst_nmc3_sy_3-4-1-1.tar.gz	UPS Application for 1-Phase Symmetra, Symmetra LX.

To upgrade to firmware version 3.0 or later, the only supported method is the Secure NMC System (SNS) Tool, which can be downloaded from www.se.com/secure-nmc or by searching for SFNMC3FMTSU. To access the firmware in the software, a valid Secure NMC subscription is required. For more information, see the SNS Tool User Guide.

NOTE: If you upgrade to firmware version 2.0 or later, you cannot downgrade to a firmware version lower than 2.0.

If you downgrade from firmware version 2.4+ to a firmware version lower than 2.4, this will cause the card to be formatted, erasing all security certificates, encryption keys, configuration settings, and the event and data logs.

New Features

New Feature

There is no new feature introduced in this release.

Fixed Issues

Fixed Issue	UPS Family
	Smart-UPS	1-Phase Symmetra
There is no fixed issue in this release.
Security Update
The following security vulnerabilities have been addressed in this release: CWE-1286: Improper Validation of Syntactic Correctness of Input CWE-787: Out-of-bounds Write CWE-120: Buffer Copy without Checking Size of Input	♦	♦

Known Issues

Known Issue

There is no known issue in this release.

Hash Signatures

Windows

Signatures	snst_nmc3_su_3-4-1-1.exe
CRC32	9BF123A4
CRC64	C669A75A2C817482
SHA-256	8E2759312DFBA7C26190E7001C6279E57545BEA57660B913C5F7E9885171A292
SHA-1	73DFDB117F515BF59D2AC8495FFE952FEF3CB84C
BLAKE2sp	0EEBADD9C215B3736637C7940C5F39A1F01FAE4500E07CA2E982E28FCD8108FB

Signatures	snst_nmc3_sy_3-4-1-1.exe
CRC32	DF39BBF1
CRC64	DC13FDD223797FE5
SHA-256	794AA6DE55703D1BB3C6F6DB4EFDD79B415DDB64CE04B2DE8A20E17C7246DAA0
SHA-1	7A5EE03E7D2319CF87B9D4525110999F28EA7227
BLAKE2sp	8E72B8BAAD166A28C434490D929A51BCEC6C5E3E288EEEA8597CD39F27F67703

Linux

Signatures	snst_nmc3_su_3-4-1-1.tar.gz
CRC32	EAC2C08E
CRC64	8E8300555DA354E7
SHA-256	8D4ED8ACF570905355247877E68E723F192998EECE0383998F0B7F9D5C592927
SHA-1	856437E4DD4CA8E6CAD7B4664A6D31D99E57FD4F
BLAKE2sp	F2458EBADC7C38CA878D739DE42E10A9E3596B0D3633C5FC40945C52BA536B66

Signatures	snst_nmc3_sy_3-4-1-1.tar.gz
CRC32	8C8EE922
CRC64	CD12C071A6CBBFEE
SHA-256	8687C5BEC7F5D986042B25C785CBD6A75FD5319186353AB3FE8D26177E2C8B54
SHA-1	0373EF84EDF489EF573604C8EBF11A8658E903B7
BLAKE2sp	9B146B7C1E473A63F55CC225B6A5393AEA6E7E8BD410487CB366D2A17008C39C

macOS

Signatures	snst_nmc3_su_3-4-1-1.tar.gz
CRC32	B40200AD
CRC64	2FA8CA63567EEB93
SHA-256	6DAB706D58F14CEA4CE41A353CBE4E272B3E399CC748F27AC91C58D17E705DCA
SHA-1	21A31CDBA204C448E456235C4E3C39ED2EEE2CFB
BLAKE2sp	08C46256114F27F7EF2FD8C95A812C86697AA97467561039D9E71C12FA7FF710

Signatures	snst_nmc3_sy_3-4-1-1.tar.gz
CRC32	EC9BF516
CRC64	0845A674E1A81E2A
SHA-256	5A2A73D0EEB26B8B15DBCE74B46A55976782151AA6A486AEDE9DF060A9413DC4
SHA-1	293C5525FB2450463111C95A900FBE12525D68AD
BLAKE2sp	9C1C4521B8CBBB0254C5C9E4CAC66989ECEBF16FC4413F74B9E192299C053520