# Will there be a Bitcoin Knots Blake2b chain for StartOS 0.3.5.1?

**URL:** https://community.start9.com/t/will-there-be-a-bitcoin-knots-blake2b-chain-for-startos-0-3-5-1/5706
**Category:** Discussion
**Created:** [September 5, 2026, 7:13am UTC](https://community.start9.com/t/will-there-be-a-bitcoin-knots-blake2b-chain-for-startos-0-3-5-1/5706 "2026-09-05T07:13:21Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![himecase](https://community.start9.com/letter_avatar_proxy/v4/letter/h/bb73d2/32.png) [@himecase](https://community.start9.com/u/himecase)
#### Post date: [September 5, 2026, 7:13am UTC](https://community.start9.com/t/will-there-be-a-bitcoin-knots-blake2b-chain-for-startos-0-3-5-1/5706/1 "2026-09-05T07:13:21Z")

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I am unable to upgrade my embassy to from 0.3.5.1 to 0.4, so i wonder if Knots Blake chain will be available for 0.3.5.1 ?

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### Author: ![StuPleb](https://community.start9.com/user_avatar/community.start9.com/stupleb/32/195_2.png) [@StuPleb](https://community.start9.com/u/StuPleb)
#### Post date: [September 5, 2026, 3:14pm UTC](https://community.start9.com/t/will-there-be-a-bitcoin-knots-blake2b-chain-for-startos-0-3-5-1/5706/2 "2026-09-05T15:14:16Z")

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v0.3.x of StartOS is no longer maintained or supported, it won’t see updates, patches or new services at all.