Start with the exact symptom.

Download does not start

1. Check the address is unlocktool.net or file.unlocktool.net.
2. Note the browser error.
3. Check the connection and free disk space.
4. Do not switch to an unknown mirror.

Files disappear after extraction

1. Check that extraction finished.
2. Open Windows Security → Protection history.
3. Note the detection and file name.
4. Do not exclude a whole drive.

The tool will not open

1. Make sure the package was fully extracted.
2. Note the exact Windows message.
3. Check the file source and version.
4. Run it with an administrator account.

Username or password rejected

1. Check the username spelling.
2. Test the developer web login.
3. Use the developer password reset if needed.

Login works but the licence is inactive

1. Check the order used the same email and username.
2. Check the order number and delivery time.
3. Check it was the right service: new activation or renewal.
4. Send support your order number.

Phone is not detected

1. Confirm the required connection mode.
2. Check the driver and Device Manager.
3. Try a known-good data cable and a direct port.
4. Note the Windows device entry.

Model appears but the operation fails

1. Check the exact model and regional code.
2. Note the firmware, patch or BIT.
3. Confirm loader and operation support.
4. Do not repeat a destructive action blindly.

Port appears and disappears

1. Check whether the workflow expects a brief port.
2. Check cable, USB port and driver.
3. Use the required key combination or sequence.
4. Note the detected port name.

Cannot sign in? Check in this order

1. Confirm the account. Use the exact email and username registered on unlocktool.net — the same ones entered with your order.
2. Test the web login at unlocktool.net/post-in ↗. If it works, the username and password are correct.
3. Check the licence. Registration alone does not activate it. A new account needs a new activation; an expired licence needs a renewal.
4. Open the current tool version from the developer download page. If the tool login still fails, note the exact error.

Reset the password

1. Open the developer page: unlocktool.net/password-reset ↗
2. Enter the registered username or email.
3. Check your inbox, including spam. Use only the newest reset email.
4. Create a new, unique password.
5. Sign in on the website first, then in the tool.

Passwords are reset only on unlocktool.net. Resetting the password does not change the licence. If you no longer have the registered email, contact UnlockTool developer support — a reseller cannot change the account email.