Hi Bro Riad,
There is a misunderstanding maybe is due to my weakness in Arabic Writing, I stayed in the same context of the question, I just answered Hadjou with quotation of
شكرا جزيلا الاخ الكريم أين أجد فلاشة الجديدة المشار اليها في الفيديو
If you check inside the archive PGN-506 T5939.rar you will see PGN-506_C7_GBL8608 NEW LOGO. unfortunately, there is NO new Logo after the flashing but that does not deny the existence of the firmware with the new logo.
That is all.