It turns out that the updates, which arrived in early August on older smartphones in the Galaxy lineup, were just the first swallows. Samsung decided to release similar firmware updates with GPS fixes for millions of aging smartphones - including the S5 Neo, Galaxy Alpha, Galaxy S6 series and Galaxy A7 (2018).

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Like the firmware updates for the Galaxy Note 8, Galaxy S7 and Galaxy S8, the latest phone updates fix problems with connectivity and GPS stability.
The company didn't explain the specific reasons for the new wave of updates -- it's probably due to the discovery of security holes requiring closure. Be that as it may, the updates are coming to hundreds of millions of older Galaxy smartphones, and that's no small achievement.
The firmware version for the Galaxy S5 Neo is G903FXXU2BFG3. For the Galaxy S6 it is G92xFXXU6EVG1. If there are any Galaxy Alpha owners left in the world, the firmware G850FXXU2CVH9 is waiting for them. The latest update for Galaxy A7 (2018) is called A750FXXU5CVG1.
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The official support for the listed models ended long ago, so no one expected to see them updated in 2022. For example, the Galaxy S5 Neo recently celebrated its 7th birthday. The Galaxy Alpha was released in 2014 - it was the first phone from Samsung with an all-aluminum frame.
Said updates are not downloaded with the security patch. In order to install them, you need to go into the Settings app and check for updates. The list of changes mentions increased GPS stability, and for the Galaxy S6 series phones, there are other software improvements in the update, including improved performance.