How to reset your 6 digit passcode/pim
When you install Xumm, the first thing it asks you to do is to enter a 6 digit passcode/pin.
This 6 digit code is one of the primary ways to access the Xumm application. (The other way is via Biometrics) If, during the installation of Xumm, you did not select “Extra Security”, the 6 digit passcode is also one of the ways to sign a transaction.
To change your passcode, launch Xumm, press Settings then Security then Change passcode.
Enter in your current passcode, then enter in your new passcode. You have 1 million possible combinations to choose from. This is one of the primary security measures for protecting your funds so do not choose, 123456, 000000, 11111 or something similar. Your passcode should be difficult to guess.
In a case where your passcode is no longer working, you are going to need to uninstall Xumm, then reinstall Xumm and re-import your account using your account secret.
In a case where you have lost your passcode, the solution is the same as if your passcode is not working. Uninstall Xumm, then reinstall Xumm and re-import your account using your account secret.