Former links:
https://aka.ms/update365
https://gallery.technet.microsoft.com/office/Script-for-Update-or-8fb223bd
https://gallery.technet.microsoft.com/Script-for-Update-or-8fb223bd

-This sciprt helps you to update or rollback your Office 365 client.
-You can choose your build number or channel.
-This sciprt change your update channel for Office 365 client.
-You may need to change execution policy of your system. (Run : Set-ExecutionPolicy -ExecutionPolicy RemoteSigned #more detail : https://docs.microsoft.com/en-us/powershell/module/microsoft.powershell.core/about/about_execution_policies?view=powershell-6)
-You may need to unblock this script. (User Unblock-File cmdlet or right click - Properties - Unblock)
-You need to run Internet Explorer if you get a blank drop down list of Version field. (Initial setting for IE is required)
-About this script: Apps for Microsoft 365 update script

MD5 : 021078D21428D106435EEA12B582802B
SHA1 : 6760DC201A936CFEBDF7BF0C5AAA67DB76553948
SHA256 : 983C356485057EBD658C2373AA96FB7BD3050DBA3A94DC29539DBA61208AB0D8
File size : 14.5KB (14,916 bytes)
File type : PS1

Office 365 Business, Office 365 ProPlus, Office 365 Personal

2020-08-18 : Channel name bug fixed. (Correction by tobiasabele)
2020-06-26 : Channel name changed.
2019-04-19 : Verification procedure for installed Office 365 client is added.
2019-02-26 : Bud fixed / SSL/TLS issue.
2018-10-16 : Insider, Monthly Channel (Targeted), DevMain channel added.
2018-10-02 : Bud fixed / Original content URL is changed.
2018-06-25 : Bug fixed / Deferred channel entry is displayed correctly.
2018-06-08 : Updated (Source content is updated!. Modified regular expression) / Add check box for disabling update.
2018-03-06 : Bug fixed / Now, you can change channel again!
2017-09-26 : Bug fixed / Insider channel removed
2017-07-26 : GUI is added
2017-07-25 : This script can modify registry value for changing update channel.
2017-07-24 : Insider channel (First release for current channel) is added.