Make sure you are running the program as an administrator and that your antivirus hasn't quarantined essential .dll files from the tool's directory. Disclaimer and Safety Warning
What (like an FRP lock, a boot loop, or a network registration issue) you need to fix?
Use secret dialer codes like *#0*# to open the General Test Mode or *#1234# to check software versions.
When technicians or power users refer to a , they generally look for software that can perform critical functions like:
What (Exynos, Qualcomm, or MediaTek) your device uses? The exact operating system version you are targeting?
While the "free" aspect is tempting, you must understand the risks.
Removing Google account locks after a factory reset without the original credentials.
Bypassing lock screens, removing bloatware, reading extended system info, and resetting FRP.
If the Must Tool fails for your specific model, try these free alternatives found on GSMForum:
To help find the right utility for your specific repair scenario, let me know: What is your Samsung device? What specific error or issue are you trying to fix? Which Android version is currently running on the phone? Share public link
Contrary to what the name might suggest, the "Must Tool" is not a physical screwdriver or soldering iron. It is a designed specifically for Samsung smartphones.
The forum's "Free Files" section hosts thousands of tools. The "Samsung Galaxy Must Tool" is updated there because the developer originally released a paid version (Must Tool Box) which was later cracked and shared for free by community members. The admins of GSMForum tolerate this for educational and repair purposes.
: Flashing official firmware files ( BL , AP , CP , CSC ), installing custom recoveries, and restoring bricked phones.
When working with system-level tools, exercising caution is crucial. Follow these best practices: