Go to DEV environment, download the update file from Asset Library
unzip the downloaded file in the following location "C:\D365FFOUpgrade\"
Open CMD in Admin mode
run following commands one by one
cd C:\D365FFOUpgrade
AxUpdateInstaller.exe generate -runbookid=upgrade -runbookfile=upgrade.xml -topologyfile=defaulttopologydata.xml -servicemodelfile=defaultservicemodeldata.xml
AxUpdateInstaller.exe import -runbookfile=upgrade.xml
AxUpdateInstaller.exe execute -runbookid=upgrade
NOTE: During the execution of Cleanup for data upgrade you may encounter an error: Stack trace: Call to TTSCOMMIT without first calling TTSBEGIN.\' on category \'Error\'.
To resolve this, re-run the step with this command: AxUpdateInstaller.exe execute -runbookid=upgrade -rerunstep=\<failed-step\>