I need a small, purpose-built utility that will unlock a currently blocked feature on my Brovi H155-381 device. You are free to choose the language and framework—Python with pySerial, C/C++, or even a lightweight Java app—as long as the end result is a reliable executable I can run on Windows. If gaining access requires reading or patching firmware, I’ll want clean, well-commented source files and a brief explanation of the offset or command sequence being changed. Deliverables • Compiled utility that unblocks the feature • Full source code and build steps • Short read-me covering usage, prerequisites, and a safe rollback method in case I ever need to restore factory state I’ll supply any device logs you request and can test builds quickly on my side. Let me know how you plan to interface with the H155-381, what libraries you expect to use, and roughly how long you’ll need to deliver a first working draft.