Disclaimer: Flashing your phone carries inherent risks, including permanent hardware damage. The author is not responsible for bricked devices. Proceed only if you have technical experience with Qualcomm tools.
After a week, Alex found a trusted source: – a community archive of Motorola and BlackBerry firmware. There it was: blackberry key2 flash file
: Generally works well with standard BlackBerry Desktop/Mobile drivers on Windows. Cons : blackberry key2 flash file