How to make installer to install earlier version

[balaji_ayyanar]

Hi,

in an install script project, how can we let the installer to install earlier version than installed version (a) how to make an installer to downgrade? I am stuck with a pop-up saying "This setup installs an earlier version"

Thanks,.

[Jenifer]

Hi @balaji_ayyanar ,

You can achieve setup downgrade by commenting/removing below lines of code from OnUpdateUIBefore event:The specific event you can find under:

Behavior and Logic->InstallScript->Setup.rul->Before Move Data->OnUpdateUIBefore

// Check whether the update is older than the currently installed version.
	//if( nResult = VERSION_COMPARE_RESULT_OLDER ) then
	//	szMsg = SdLoadString( IDS_IFX_ERROR_UPDATE_NOT_APPROPRIATE );
	//	SdSubstituteProductInfo( szMsg );
	//	MessageBox( szMsg, SEVERE );
	//	abort;
	//endif;

Hope it helps,

Thanks,

Jenifer

[balaji_ayyanar]

There is no such Event like "OnUpdateUIBefore" on Setup.rul Is there any other way ?

[Jenifer · Accepted solution]

Hi @balaji_ayyanar ,

When you click on Setup.Rul,you will be able to see two combo-boxes where you can select methods in the editor window.

• On first combobox select "Before Move Data"
• On select combobox select "OnUpdateUIBefore"
• Comment out the below lines:
• // Check whether the update is older than the currently installed version.
  if( nResult = VERSION_COMPARE_RESULT_OLDER ) then
  szMsg = SdLoadString( IDS_IFX_ERROR_UPDATE_NOT_APPROPRIATE );
  SdSubstituteProductInfo( szMsg );
  MessageBox( szMsg, SEVERE );
  abort;
  endif;//

Then try out,it will work.I had verified this been working.

Thanks,

Jenifer