I tried to create a custom Smeg+ (Citroen Picasso 2) Speedcam database, but failed.
There I found out that I was not the proper way to compress the file ZAR_POI.BIN. I see that the first step TMP_POI folder is compressed tar format. It will be a TMP_POI.TAR file. This compressed again (zip or gzip, I tried both), and this will be the ZAR_POI.BIN file.
I got a working version, unpacked and packed back in the same manner, but it does not work. Of course, the CRC values are calculated and rewrote.
If someone would have idea this, please write it. Thank you.