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Lantronix NTC_22x Software
Software Release Notes
Copyright 2026 (c) Lantronix Inc.
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RELEASE SUMMARY
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Version:      2.4.0.0R14
Release Date: May 20, 2026

Previous version was 2.3.0.0R14 on 2 April, 2026

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RELEASE STATUS
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  Alpha         ( )
  Beta          ( )
  Supplemental  ( )
  Production    (x)
  Test          ( )

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PRODUCTS SUPPORTED
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GENERIC FIRMWARES

Firmwares
1) ntc_220_2.4.0.0.signed.cdi(md5: d6c6aac09512ee6765611e036d80d48f): NTC-221, NTC-222, NTC-223, NTC-224
2) vzw_220_2.4.0.0.signed.cdi(md5: 14281c529dd1bcfffa8d8152ff240cd8): NTC-225-01
3) ntc_227_2.4.0.0.signed.cdi(md5: db8dc698d64915a26fd9c9d516fc024c): NTC-227

RECOVERY FIRMWARES
1) ntc_220_2.4.0.0_r.signed.cdi(md5: 68625385009c20e0c4cbd93a0a91f43c): NTC-221, NTC-222, NTC-223, NTC-224
2) vzw_220_2.4.0.0_r.signed.cdi(md5: 66fd616ffc19e0255fe7b2df41214eab): NTC-225-01
3) ntc_227_2.4.0.0_r.signed.cdi(md5: 02535f9ff27ead317934331d4b1e2718): NTC-227

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NEW FEATURES/TASK
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1) Upgrade Python3.7 to 3.11 (A-1229)
2) Connect operation implemented in Percepxion.(A-1084)
3) Retrieve logfiles implemented in Percepxion.(A-1081)
4) Implemented comprehensive security hardening across authentication, session management, input validation, and access-control mechanisms.
5) Security and vulnerability protection enhancements following automated security testing.

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Bug Fixes
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1) WebUI OpenVPN Client CA certificate upload button fix (A-1133)
2) Password field must not accept with leading/trailing spaces (A-964)
3) Security and vulnerability protection enhancements (A-1266, 1187)

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REMOVED FEATURES
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KNOWN LIMITATIONS & ISSUES
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1) Downgrading to a version older than 2.3.0.0R1 may require a factory reset to login into the device(due to the password encryption feature).
2) Web connect operation is not supported on Percepxion (A-1082)
3) Audit logs are not generating on Percepxion (A-1805)
4) The Python package must be removed from the web interface before downgrading from firmware version 2.4.0.0R2.

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WARNINGS
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