From the documentation :
Unofficial
- Builds are made by /e/OS or external users
- Builds are not supported by /e/OS
- Made using /e/OS sources code with no modifications in any form
- At times may not have a maintainer as in made by a user who does not own the device
- Do not receive OTA updates
- Available for download on /e/OS websites and are tagged as “UNOFFICIAL”
- Release Frequency: Monthly or biMonthly
- Build Naming format: e-0.7-n-2020021341116-UNOFFICIAL-mata.zip
- Install these builds at your own risk
Naming format explanation:
e-codeversionnumber-osversion-YYYYMMDDbuildid-UNOFFICIAL-devicename.zip
The name of the build I used : e-2.8-u-20250304-UNOFFICIAL-ginkgo.zip
I think I got it here : [UNOFFICIAL BUILD] Xiaomi Note 8T (ginkgo) for /e/OS-T
Why I used it ? When following the installation documentation (Install /e/OS on a Xiaomi Redmi Note 8 / 8T - “ginkgo”) the links to /e/OS recovery and build give error 404.
Regards