2G Legacy Mode Firmware Release History
Overview
Review current and previous L Series and A Series firmware records. Releases are grouped by firmware family, with the newest records first.
For current L Series firmware used with AMP, see Download 2G Legacy Mode Firmware. For an established system remaining on A Series firmware, use the A6.5.9-LTS.v3 download and release notes below.
For version numbering and video compatibility, use Understand 2G Legacy Mode Firmware Compatibility.
Historical A Series file matching is also in that reference: see the 2G Series table or the Omega Series table.
Public downloads are listed for L1.1.9.0, L1.1.9.1, and temporarily A6.5.9-LTS.v3. A6.5.9-LTS.v3 will be delisted on January 1, 2027. Older release notes remain available.
Firmware Release Index
Date types: The older firmware tables preserve the firmware-date values recorded for those releases, including multiple dates and suffixes. These values are not automatically public release dates. The L Series diagnostic date is also separate from its public release date.
| Firmware | Firmware Family | Date and Type | Release Record | Download |
|---|---|---|---|---|
| L1.1.9.1 | L Series for AMP | 2026-11-04 (release) | Release notes | Download L1.1.9.1 |
| L1.1.9.0 | L Series for AMP | 2026-10-06 (release) | Release notes | Download L1.1.9.0 |
| A6.5.9-LTS.v3 | Historical hybrid A Series | 20-Nov-24 | Release notes | Download A6.5.9-LTS.v3 |
| A6.5.9-LTS.BF2 | Historical hybrid A Series | 20-May-19 | Release notes | No download link listed |
| A6.5.9-LTS.BF1 | Historical hybrid A Series | 20-Feb-28 | Release notes | No download link listed |
| A6.5.5 | Historical hybrid A Series | 18-Mar-01 | Firmware-date record | No download link listed |
| A6.5.0 | Historical hybrid A Series | 17-Jun-22 / 17-Jul-18 | Firmware-date record | No download link listed |
| A6.4.12 | Historical hybrid A Series | 17-Jan-12 | Firmware-date record | No download link listed |
| A6.4.1 | Historical hybrid A Series | 16-Oct-07 | Firmware-date record | No download link listed |
| A5.31 FC+4+ | Historical 2G-only A Series | 15-Dec-2 or 15-Dec-29 | Firmware-date record | No download link listed |
| A5.30 | Historical 2G-only A Series | 14-Dec-23 | Firmware-date record | No download link listed |
| A5.21d | Historical 2G-only A Series | 14-Feb-28 | Firmware-date record | No download link listed |
| A5.13d | Historical 2G-only A Series | 13-Nov-04 | Firmware-date record | No download link listed |
| A3.54c | Historical 2G-only A Series | 13-Apr-15 4558 | Firmware-date record | No download link listed |
| A3.21c | Historical 2G-only A Series | 13-Feb-18 or 13-Apr-15 34f8 | Firmware-date record | No download link listed |
| A3.2a | Historical 2G-only A Series | 12-Aug-22 | Firmware-date record | No download link listed |
| A3.20 | Historical 2G-only A Series | 12-May-23 | Firmware-date record | No download link listed |
| A3.00C | Historical 2G-only A Series | 11-Nov-08 | Firmware-date record | No download link listed |
| A3.0 | Historical 2G-only A Series | 11-Sept-06 | Firmware-date record | No download link listed |
| A1.35 | Historical 2G-only A Series | 11-Jul-29 | Firmware-date record | No download link listed |
L Series Firmware Releases
L1.1.9.1
Release date: 2026-11-04.
Also included with AMP 2.0.2. Follow the update workflow appropriate to the system.
Fixed
- JPSW:
jpsw 1.9.1Corrects matrix switching control failures with certain TP-Link switches running newer switch firmware.
Known Issues
No known issues were listed for this release when its notes were published.
L1.1.9.0
First L Series release for AMP 2G Legacy Mode. Requires AMP 2.0.0 or later and Standardized Configuration.
Release date: 2026-10-06.
Added
- JPSW switching: Devices respond to
jpswcommands for switching and configuration through AMP. - Automatic operating settings: On compatible Omega Series and Ultra Series devices changing from
Bx.y.zfirmware to L Series firmware, the required 2G Legacy Mode settings are applied automatically. A separate sequence ofastparamcommands is no longer required.
Changed
- The diagnostic background displays the Just Add Power logo on one line, without the plug icon.
- The diagnostic firmware date changes to
26-Aug-21.
Custom background replacement: Applying L1.1.9.0 overwrites any custom diagnostic background with the Just Add Power background.
Release Scope
- EDIDs are unchanged by this release.
- The webUI retains its existing appearance and functionality, apart from the displayed firmware version.
- Existing diagnostic text in the bottom-left and bottom-right corners remains, apart from the firmware date changing to
26-Aug-21.
Historical Hybrid A Series Firmware
Hybrid A Series releases were used on 2G Series-only systems and systems combining 2G Series devices with compatible Omega Series and Ultra Series devices. Model support varies by release; the A Series history is not a compatibility list for every Ultra Series device.
Historical backward compatibility with Omega Series and compatible Ultra Series hardware begins at A6.4.12. The earlier A6.4.1 entry is retained as a firmware-date record.
| Firmware | Recorded Firmware Date |
|---|---|
| A6.5.9-LTS.v3 | 20-Nov-24 |
| A6.5.9-LTS.BF2 | 20-May-19 |
| A6.5.9-LTS.BF1 | 20-Feb-28 |
| A6.5.5 | 18-Mar-01 |
| A6.5.0 | 17-Jun-22 / 17-Jul-18 |
| A6.4.12 | 17-Jan-12 |
| A6.4.1 | 16-Oct-07 |
A6.5.9-LTS.v3
Release date: 2020-11-24.
Established A Series systems only: Use this package when maintaining a system that is remaining on A Series firmware. A6.5.9 variants are compatible with each other but are not compatible with A Series releases earlier than A6.5.9. Check firmware compatibility and file matching and the A Series update instructions before applying firmware.
Download Firmware A6.5.9-LTS.v3
Download availability: A6.5.9-LTS.v3 will be delisted from the website on January 1, 2027.
Added
- Support for the ST1 Sound Transceiver. Its Encoder or Decoder operating mode depends on the hardware jumper position. Changing operating mode requires a reboot.
Fixed
- Compatible devices default to historical 2G Mode without manually executing
2gmode.sh.
Known Issues
No known issues were listed for this release when its notes were published.
A6.5.9-LTS.BF2
Release date: 2020-05-19.
Fixed
- Corrects CEC operation on 2G Series devices.
A6.5.9-LTS.BF1
Release date: 2020-02-28.
Fixed
- Prevents video freezing after a cable or satellite source outputs a bad video frame during a resolution change.
- Prevents black video when a satellite source changes resolution in Native Mode.
- Corrects dull BT2020 color-space reproduction.
- Enables the OM-715POE HDMI loopout by default.
- Corrects a startup race condition that caused mDNS to announce devices as
HTTP on noneand prevented discovery. - Updates scripts for POSIX sh compliance, allowing historical A Series updates directly from firmware earlier than A6.4.12.
- Delays the
getmodel.shfilesystem cache record until 60 seconds of uptime so SCU checks can finish. - Corrects a startup issue that prevented SwitchPlease from loading.
Known Issues
Some cable and satellite sources can cause audio loss on UL-718AVP and UL-749AVP Encoders.
- The historical workaround is to disable the microphone and line inputs.
- To restore audio when the issue occurs, power-cycle the affected Encoder or execute
dd_reset.shthrough Telnet.
Service interruption: Power-cycling interrupts that Encoder. Plan the test when the affected source can be interrupted.
Historical 2G-Only A Series Firmware
These releases run only on 2G Series hardware. The final release in this 2G-only family is A5.31 FC+4+. Later hybrid A Series releases and L Series firmware are documented separately above.
| Firmware | Recorded Firmware Date |
|---|---|
| A5.31 FC+4+ | 15-Dec-2 or 15-Dec-29 |
| A5.30 | 14-Dec-23 |
| A5.21d | 14-Feb-28 |
| A5.13d | 13-Nov-04 |
| A3.54c | 13-Apr-15 4558 |
| A3.21c | 13-Feb-18 or 13-Apr-15 34f8 |
| A3.2a | 12-Aug-22 |
| A3.20 | 12-May-23 |
| A3.00C | 11-Nov-08 |
| A3.0 | 11-Sept-06 |
| A1.35 | 11-Jul-29 |
Downloads and Update Instructions
- AMP 2G Legacy Mode: Use Download 2G Legacy Mode Firmware for the current L Series package.
- Established A Series systems: Use the A6.5.9-LTS.v3 download in this article after checking compatibility.
- Update procedure: Follow How to Update Firmware on a Device (2G Series and 2G Legacy Mode) for the system's workflow.

