1.3 MPLAB Packs to Install Device Family Packs (DFPs)
The MPLAB Pack Manager can add or remove device support from MPLAB X IDE. A newer version of the DFP or new device support can be added using the Packs in MPLAB X IDE, there is no need to install MPLAB X IDE from scratch. This eliminates the patching of MPLAB X IDE or smaller installer to patch few files.
To open the Packs, from MPLAB X IDE select Tools > Packs.
Note: Atmel Studio handles the device part
packs similarly.