Totally agree with making this more visible in a dedicated thread on the forum. However, just discovered, there are release notes in the downloadable firmware ZIP files for their respective products.
@Paul I had initial problems with the streamer when I updated my PMG 512, Saturday. After a frustrating several hours with the network connection I was finally able to get it to connect. (documented, here: PMG 512 DAC first impressions - #560 by jaycee )
Unfortunatly, dropped connection again, yesterday. I’d hoped to fall back to the previous firmware version and went looking for the file on the the “Download” section of the PSA website.
Armed with the release notes I clearly see my problems are likely related to areas that were ‘updated’ for this release. One bug…release notes state, “A factory reset will delete all saved Wi-Fi connections/ SSIDs on the streamer”. This did not happen when tried this morning. I wanted a fresh attempt at initializing the DAC. I was surprised when, after it rebooted, it connected to the network. So, I manually deleted it using the DAC config option, rebooted and then entered my network credentials. But, to the bigger problem, I’ve had nothing but grief with the streamer and my network, which wasn’t a problem in the previous firmware.
Apologies to @flenser55 for getting into the weeds in your “Communication of firmware updates” thread. I’m on a roll and typed more than intended.
Back on topic to the OP’s thread. Following, copied from the latest PMG 512 zip file, “PMG Signature 512 DAC Release Notes.pdf”:
“Version DAC: 2.5.4
Streamer: 2.1.98380d
Date 09/25/2025
File pmg_dac_v2.5.4.bin
Description
This load improves streamer initialization, fixes several UI issues, improves Wi-Fi provisioning, and gives better control of Menu volume settings (fixed volume, max volume).
New Features
•Streamer icon input lock will blink green during initialzation
◦When the streamer is initializing, the streamer lock icon will blink green after the streamer gets Internet connection and the streaming services are first initializing. During this period, the PMG DAC streamer may not appear on streaming apps such as Spotify, Roon, etc… The green icon lock will blink for about 30 to 60 seconds. At this point, the streaming services should appear. Note that some services come up faster than others, and when the PMG DAC Streamer appears in your streaming app it is ready to use, you don’t have to wait for the green input lock icon to stop blinking.
Fixes
•Fixed issue where fonts on the screen become corrupted
•Added interactive volume control for fixed volume and max volume
•Improved Wi-Fi provisioning and UI Dialog interaction
•Fixes for volume not behaving properly when changing inputs
•Menu timeout is turned off during streamer FW updates
•Fixes for trigger menus not working
•Some settings were not properly restored on power on
•Added pop-up to indicate a reboot after a factory reset
•A factory reset will delete all saved Wi-Fi connections/ SSIDs on the streamer
•Factory reset will wait until the streamer has completed factory reset before rebooting the unit
•Improved factory reset dialog”