[Breach]

I apologize for the stupid question. What do BLP data contain? What is it used for? Thank you!

From what I see, the BLP package contains the PSdZ data folder which comprises the KIS DB and mainseries data. I think it's essentially "PSdZ Lite" and is needed for basic ISTA operation. It's not really something new - previously this was part of the main ISTA/D package, now it's provided separately.

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Hello
Is this version ready to program when I unzipped the SDP and BLP folder?

Should be (for the supported chassis), though I program via e-Sys. Also, I think ENET programming is not possible in ISTA/D - you'd need an ICOM.