Welcome to the FunOS download page! Below you’ll find links to download the latest stable and interim releases of FunOS, along with important details such as file size, checksums, and release notes. Each release is based on a specific version of Ubuntu, ensuring a stable and secure foundation for your system.

Latest Release

LTS Release

FunOS 24.04.4 LTS (with Calamares Installer)^Recommended

• File Name: funos-24.04.4-stable.20260407-calamares.iso
• Release Date: April 7, 2026
• Standard Support Ends: June 2029
• End of Life (EOL): April 2036
• File Size: 1.9 GB
• SHA1: ff2aebd3c7c06a63a17485045ca3042ef9243859
• MD5: bab6e19381f2ee15c1a87e259a699300
• Base: Ubuntu 24.04.4 LTS (Noble Numbat)
• Download Link: Download FunOS 24.04.4 LTS (with Calamares Installer)
• Release Notes: View Release Notes

FunOS 24.04.4 LTS

• File Name: funos-24.04.4-stable.20260213.iso
• Release Date: February 13, 2026
• Standard Support Ends: June 2029
• End of Life (EOL): April 2036
• File Size: 1.9 GB
• SHA1: e1a63722bac2cadbda22303baada24cc
• MD5: a07d3c014858aef5360ca920be63fa30a922cbd8
• Base: Ubuntu 24.04.4 LTS (Noble Numbat)
• Download Link: Download FunOS 24.04.4 LTS (with Ubiquity Installer)
• Release Notes: View Release Notes

Interim Release

FunOS 25.10 (with Calamares Installer)

• File Name: funos-25.10-stable.20260408-calamares.iso
• Release Date: April 9, 2026
• Standard Support Ends: July 2026
• End of Life (EOL): July 2026
• File Size: 2.1 GB
• SHA1: ccfc509d9832a8a72c332943c1dc2b025849c719
• MD5: d1b76d59f5228e341e4cf25a9fd85071
• Base: Ubuntu 25.10 (Questing Quokka)
• Download Link: Download FunOS 25.10 (with Calamares Installer)
• Release Notes: View Release Notes

FunOS 25.10

• File Name: funos-25.10-stable.20251014.iso
• Release Date: October 14, 2025
• Standard Support Ends: July 2026
• End of Life (EOL): July 2026
• File Size: 2.1 GB
• SHA1: 4cca638f15f46ee270747c73e22bcd87f5ab52fb
• MD5: 46f0113d71b7c1ffb37ef56cadb113dc
• Base: Ubuntu 25.10 (Questing Quokka)
• Download Link: Download FunOS 25.10
• Release Notes: View Release Notes

Previous Releases

Previous LTS Releases

Noble Numbat

FunOS 24.04.3 LTS

• File Name: funos-24.04.3-stable.20250811.iso
• Release Date: August 11, 2025
• File Size: 1.9 GB
• SHA1: daab02df6e15756b3b6664ff60478c56c363f621
• MD5: eb98ac9b26d0f01c5e7d7788be79743d
• Base: Ubuntu 24.04.3 LTS (Noble Numbat)
• Download Link: Download FunOS 24.04.3 LTS
• Release Announcements: View Release Announcements
• Release Notes: View Release Notes

FunOS 24.04.2 LTS

• File Name: funos-24.04.2-stable.20250303.iso
• Release Date: March 3, 2025
• File Size: 1.8 GB
• SHA1: 4ecf08e831f63404f805163a761032eba1f66310
• MD5: fcc05d30b1f9d458ab7988e511aa3846
• Base: Ubuntu 24.04.2 LTS (Noble Numbat)
• Download Link: Download FunOS 24.04.2 LTS
• Release Notes: View Release Notes

FunOS 24.04.1 LTS (Build 20241228)

• File Name: funos-24.04.1-stable.20241228.iso
• Release Date: December 28, 2024
• File Size: 1.9 GB
• SHA1: f13682b646638edb03668279c18ecde547a315fc
• MD5: 21362b5dc6506dd5968d38dd4fe6753a
• Base: Ubuntu 24.04.1 LTS (Noble Numbat)
• Download Link: Download FunOS 24.04.1 LTS (Build 20241228)
• Release Notes: View Release Notes

FunOS 24.04.1 LTS

• File Name: funos-24.04.1-stable.20240901.iso
• Release Date: September 1, 2024
• File Size: 1.9 GB
• SHA1: d5b19b005ee0603621af245b44aea0f19fc2504d
• MD5: ea8214239d75f9247473dd6570e587af
• Base: Ubuntu 24.04.1 LTS (Noble Numbat)
• Download Link: Download FunOS 24.04.1 LTS
• Release Notes: View Release Notes

FunOS 24.04 LTS

• File Name: funos-24.04-stable.20240514.iso
• Release Date: May 14, 2024
• File Size: 1.8 GB
• SHA1: 35693176856c7590f648c52d3f80dec05858dce5
• MD5: 73d1fe4806b3995631e17055580cdfb5
• Base: Ubuntu 24.04 LTS (Noble Numbat)
• Download Link: Download FunOS 24.04 LTS
• Release Notes: View Release Notes

Jammy Jellyfish

FunOS 22.04.5 LTS

• File Name: funos-22.04.5-desktop-amd64.iso
• Release Date: October 25, 2024
• File Size: 2 GB
• SHA1: 4f1d6b72dabd068e97330bfe325618df734ad1c7
• MD5: 67d67f915da7c9bf7028d6259cf9eae1
• Base: Ubuntu 22.04.5 LTS (Jammy Jellyfish)
• Download Link: Download FunOS 22.04.5 LTS
• Release Notes: View Release Notes

FunOS 22.04.4 LTS (Build 20240402)

• File Name: funos-22.04.4-stable.20240402.iso
• Release Date: April 1, 2024
• File Size: 1.8 GB
• SHA1: 1b7ef64611c69b9294783b076691da24eb04f36f
• MD5: 0da5c7c4d1789afdf11ca7cda20b7804
• Base: Ubuntu 22.04.4 LTS (Jammy Jellyfish)
• Download Link: Download FunOS 22.04.4 LTS (Build 20240402)
• Release Notes: View Release Notes

FunOS 22.04.4 LTS

• File Name: funos-22.04.4-stable.20240228.iso
• Release Date: February 28, 2024
• File Size: 1.8 GB
• SHA1: 7e3e8f198c2fd08bd6278710e90afd052ac06f40
• MD5: 0a94a7ef6a87545277195e4b88f58884
• Base: Ubuntu 22.04.4 LTS (Jammy Jellyfish)
• Download Link: Download FunOS 22.04.4 LTS
• Release Notes: View Release Notes

FunOS 1.2 LTS

• File Name: funos-1.2-stable.20240203.iso
• Release Date: February 4, 2024
• File Size: 1.8 GB
• SHA1: 86dc921672e224b94416b264aae267cb74053573
• MD5: 71cc7d59874ec30fba140ab37ade6cfc
• Base: Ubuntu 22.04.3 LTS (Jammy Jellyfish)
• Download Link: Download FunOS 1.2 LTS
• Release Notes: View Release Notes

FunOS 1.1 LTS

• File Name: funos-1.1-stable.20240127.iso
• Release Date: January 29, 2024
• File Size: 1.8 GB
• SHA1: 34e7a7e50e6c0f369fd191a69844315a5c5e5768
• MD5: 20599a0f62ceb4149a699999ce6aedb9
• Base: Ubuntu 22.04.3 LTS (Jammy Jellyfish)
• Download Link: Download FunOS 1.1 LTS
• Release Notes: View Release Notes

FunOS 1.0 LTS

• File Name: funos-1.0-stable.20240101.iso
• Release Date: January 2, 2024
• File Size: 1.7 GB
• SHA1: 047c8cb0cb613c2f27413c813731ca0e96c46cc1
• MD5: dfeb36aac8766417d169bfebb0f4120a
• Base: Ubuntu 22.04.3 LTS (Jammy Jellyfish)
• Download Link: Download FunOS 1.0 LTS
• Release Notes: N/A

Previous Interim Releases

Plucky Puffin

FunOS 25.04

• File Name: funos-25.04-stable.20250420.iso
• Release Date: April 20, 2025
• File Size: 1.9 GB
• SHA1: 80d4f4106078ed0f780453345859132121e9060f
• MD5: 5e8d3311cb5be6dd74806408e58a1559
• Base: Ubuntu 25.04 (Plucky Puffin)
• Download Link: Download FunOS 25.04
• Release Notes: View Release Notes

Oracular Oriole

FunOS 24.10 with Calamares Installer

• File Name: funos-24.10-calamares-stable.20250204.iso
• Release Date: February 4, 2025
• File Size: 1.8 GB
• SHA1: 27b8f7680db1d2515b02cad3c53bc508c1392924
• MD5: 9d020272d13da42df9bfea06f9937b45
• Base: Ubuntu 24.10 (Oracular Oriole)
• Download Link: Download FunOS 24.10 with Calamares Installer
• Release Notes: View Release Notes

FunOS 24.10

• File Name: funos-24.10-stable.20250113.iso
• Release Date: January 13, 2025
• File Size: 1.9 GB
• SHA1: 08f3f42e0edee0519a013b541aeebe1e9e9a6a95
• MD5: 3419679c55a81f7ef27bb339b49454b0
• Base: Ubuntu 24.10 (Oracular Oriole)
• Download Link: Download FunOS 24.10
• Release Notes: View Release Notes