.QSB File

The qsb file extension is related to the Lenovo smartphones with Google Android operating system, such as Vibe-series, A-series, K-series, and Moto series (also known as Motorola).

The qsb file stores update of firmware (Android operating system) for these smartphones.

Install update to Lenovo phone:

• Need a memory card, create folder sdfuse and copy your qsb file to this folder.
   
• Switch off the phone, long press VOLUP + POWER_KEY enter droidboot, a menu appears and select the fourth SDUPDATE option.

How to open:

Probably not meant to be accessed by the user.

How to convert:

Probably cannot be converted to anything else.