A 64-bit image for the Raspberry Pi 3, and a balena fleet for the Rock Pi 4

If you have a Raspberry Pi 3 running a 64-bit operating system, or a Radxa Rock Pi 4, there's now an Anthias disk image and a balena fleet made for your board. On a Pi 3 with Raspberry Pi OS, the installer picks the wrong image in this release; that's fixed in Anthias 2026.07.0.

Anthias 2026.06.3 adds a 64-bit Raspberry Pi 3 image, called pi3-64, and a balena fleet and disk image for the Radxa Rock Pi 4 Model B.

Raspberry Pi 3 on a 64-bit OS

A Raspberry Pi 3 can run a 32-bit or a 64-bit operating system. Until now Anthias installed the 32-bit pi3 image on both, with its Qt 5 viewer. From Anthias 2026.06.3, a Pi 3 running a 64-bit OS gets pi3-64 instead, with the Qt 6 viewer the Raspberry Pi 4 uses.

On balena and from the disk image, a 64-bit Pi 3 works from this release. On Raspberry Pi OS, the installer and the upgrade script were meant to choose for you, but in 2026.06.3 they got it wrong in 2 ways:

• They chose by the kernel, and 32-bit Raspberry Pi OS starts a 64-bit kernel on a Pi 3 by default. So a Pi 3 on 32-bit Raspberry Pi OS was given pi3-64, and the download failed with no matching manifest for linux/arm/v8.
• A new install on a 64-bit OS stopped with Required environment variables missing or invalid, because the install playbook didn't accept pi3-64 yet.

Both are fixed in Anthias 2026.07.0, which chooses by the operating system instead. From then on, a Pi 3 on a 64-bit OS moves to pi3-64 when it upgrades, and a Pi 3 on a 32-bit OS stays on pi3, which is in maintenance mode. To move one to the 64-bit image, flash a 64-bit OS and install Anthias again.

The 64-bit Pi 3 image is in the same places as the others:

• a disk image on the release page, anthias-pi3-64
• an entry in Raspberry Pi Imager, without the maintenance mode note the 32-bit Pi 2 and Pi 3 entries carry
• a balena fleet, screenly_ose/anthias-pi3-64, for the balenaOS device type raspberrypi3-64

As on the 32-bit image, video uploads have to be H.264. HEVC uploads are rejected with a way to convert them. Video on pi3-64 could still show a black screen in this release; Anthias 2026.07.2 fixes that.

Rock Pi 4

The Rock Pi 4 has its own balena fleet, screenly_ose/anthias-rockpi4, and a disk image on the release page, anthias-rockpi4. It runs the generic arm64 containers, so there is no separate Rock Pi 4 build.

Anthias recognizes the board by the model name in its device tree and accepts H.264 and HEVC video uploads on it. On a docker-compose install, a host service reported that model name to the server, but balena installs don't run that service, so a Rock Pi 4 on balena would have had every video upload rejected. The server now reads the device tree itself when nothing has been reported. That also covers a docker-compose install whose host service isn't running. An arm64 board Anthias doesn't recognize still has its video uploads rejected.