Codename shared with another phone. griffin is also the codename of the Motorola moto z. Codenames are only unique per manufacturer, so before flashing, check that a build names the Sony Xperia 1, not just griffin.
Released 2019. Support looks quiet — check the build dates below before relying on it.
Hardware
- SoC
- Qualcomm Snapdragon 855 (SM8150)
- CPU
- Octa-core (1x2.84 GHz Kryo 485 & 3x2.42 GHz Kryo 485 & 4x1.78 GHz Kryo 485)
- GPU
- Adreno 640
- Architecture
- arm64
- RAM
- 6GB/8GB
- Storage
- 64GB/128GB
- Screen
- 6.5" · 3840x1644 · OLED
- Released
- 2019
Specs from postmarketOS wiki (CC BY-SA 4.0).
ROMs · 01
The Sony Xperia 1 (codename griffin) has 1 tracked custom ROM on CustomDroid — including Sailfish OS. Each listing links to the project's own download and install guide, and was last checked against the projects' catalogues on 21 Sept 2026.
Sony's security updates for this model ended in Oct 2021, so a maintained custom ROM is how it still gets Android security patches. endoflife.date · what end-of-life means
RSS feed — subscribe to get new Sony Xperia 1 builds in your reader · JSON
Before you flash
Flashing generally means unlocking the bootloader, booting a custom recovery, wiping, then installing the ROM. Exact steps differ per device and ROM, so follow the Install guide for the one you pick, and back up first. Check what can break (banking apps, DRM, carrier features) and how to get back to stock before you start. Why flash a custom ROM · All guides
This is a Qualcomm device, so on Windows you'll want the Google USB Driver (and QDLoader 9008 to unbrick) before your computer will see it in fastboot. Which USB drivers you need.
Timeline
- Sept 2026Sailfish OS first tracked
Dates show when CustomDroid first indexed each ROM for this device, not when support originally launched.
ROM availability and links come from each project. CustomDroid indexes builds, it doesn't mirror them — always download from the official project, verify the file's hash/signature, confirm it matches your exact codename, and back up before flashing.