If you want to program with ISTA you need the psdzdata full in the folder
...Rheingold/PSdZ/data_swi/psdzdata
If you have no folder data_swi you can create it yourself.
You can use any SDP you like.
And maybe you have to check before if the programming mode is activated.
So look in the ISTAGUI.exe.config and search these keys...
<add key="BMW.Rheingold.Programming.ExpertMode" value="true" />
<add key="BMW.Rheingold.Programming.Enabled" value="true" />
<add key="BMW.Rheingold.Programming.PsdzDataPath" value="..\..\..\PSdZ\data_swi" />
And then you maybe have another problem.
At an used EGS the ISN has to be resetted, otherwise it is not possible to program.
For that you need some special tools.
https://bimmerscan.com/remote-isn-re...eries-8hp-egs/