I have posted ISTA+ 4.10 on my Mega account and made it downloadable using this link: https://mega.nz/folder/iwUUlTTR#ZFtJJNFHWSYrPfcJENvILg
I haven't used ISTA+ yet, so I don't know whether what I posted works, or even whether the download link is still valid. If you are unable to download it, let me know.
[22-04-25 to now] 2019 BMW i3 Imperial Blue Metallic, Giga World, Tech + Driving Assist, Heat Pump, 428 Wheels
[14-11-05 to 22-06-15] 2014 BMW i3 Arravani Grey, Giga World, Tech + Driving Assist, Parking Assist, DC Fast Charging