"To upgrade the processor" means to replace the existing central processing unit (CPU) of a computer or device with a newer or faster one. This can help improve the overall performance and speed of the device. Full definition
The company has upgraded their processors in the past, I'm sure they'll do it again when the time comes. (liliputing.com)
Things like upgraded processor, more RAM, a larger battery unit and a new design language are also expected when the phone is unveiled next year. (nashvillechatterclass.com)
All the models with upgraded processors and lesser price tags are now available at all retail stores and Apple Authorized Resellers. (techone3.in)