# Grinnode.live public GRIN-API and Sync-Service downtime scheduled - upgrade to v4.0 \[closed\]

**URL:** <https://forum.grin.mw/t/grinnode-live-public-grin-api-and-sync-service-downtime-scheduled-upgrade-to-v4-0-closed/7506>\
**Category:** Development and Technical Discussion\
**Created:** [July 3, 2020, 3:49pm UTC](https://forum.grin.mw/t/grinnode-live-public-grin-api-and-sync-service-downtime-scheduled-upgrade-to-v4-0-closed/7506 "2020-07-03T15:49:13Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![mcm-mike](https://yyz2.discourse-cdn.com/flex036/user_avatar/forum.grin.mw/mcm-mike/32/3492_2.png) [@mcm-mike](https://forum.grin.mw/u/mcm-mike)\
**Post date:** [July 3, 2020, 3:49pm UTC](https://forum.grin.mw/t/grinnode-live-public-grin-api-and-sync-service-downtime-scheduled-upgrade-to-v4-0-closed/7506/1 "2020-07-03T15:49:13Z")

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A new Grin-Node version will be deployed on our entire infrastructure, therefore we are scheduling a downtime this weekend.

Details about the downtime available here: [https://grinnode.live/global-health-check](https://grinnode.live/global-health-check)

There will be temporary downtime of:

- **all public API’s**
- **GRIN explorer sync-services**
- **connection problems of all connected nodes**
- **GRIN wallet API-Service, for Ironbelly or Niffler user who are using our service**

Github: [https://github.com/MCM-Mike/grinnode.live](https://github.com/MCM-Mike/grinnode.live)

Details about Grin-Node version 4.0.x

**When will the network activate the Hardfork v4.0?**  
_Grin and Grin wallet 4.0.0 have been released and is ready for general use in advance of Grin’s 3rd Hardfork scheduled to occur on block 786240._

**More details:** [Grin + Grin Wallet 4.0.0 Released](https://forum.grin.mw/t/grin-grin-wallet-4-0-0-released/7504)  
**Grin-Wallet v4.0 - List of changes:** [https://github.com/mimblewimble/grin-wallet/issues/456](https://github.com/mimblewimble/grin-wallet/issues/456)  
**Grin-Node v.4.0 - List of changes:** [https://github.com/mimblewimble/grin/issues/3341](https://github.com/mimblewimble/grin/issues/3341)

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<div class="post-metadata">

**Author:** ![mcm-mike](https://yyz2.discourse-cdn.com/flex036/user_avatar/forum.grin.mw/mcm-mike/32/3492_2.png) [@mcm-mike](https://forum.grin.mw/u/mcm-mike)\
**Post date:** [July 9, 2020, 7:32am UTC](https://forum.grin.mw/t/grinnode-live-public-grin-api-and-sync-service-downtime-scheduled-upgrade-to-v4-0-closed/7506/2 "2020-07-09T07:32:11Z")

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We did successfully upgrade all our high available Grin-Nodes to latest stable v4.0.  
For next downtimes please check: [https://grinnode.live/global-health-check](https://grinnode.live/global-health-check)