No, you will be able to upgrade to the latest public version only.
- Where can I find the New Upgrade option?
- I am on Auto Upgrade. How do I know that my sites were upgraded?
- I disabled Auto Upgrade and now use Sandbox Upgrade Mode. How do I know about new version available?
Main articles about New Upgrade:
- ShortPoint SPFx New Upgrade for Office 365 and SharePoint 2019
- ShortPoint SPFx Auto Upgrade Feature
- ShortPoint SPFx Sandbox Mode Feature
You may check other FAQs about ShortPoint Upgrade in this folder.