.mot file is S-record, it will ask subsequently
.pcp file a a programming algorithm, it should be present in PKGPPCNEXUS installation directory or it can be downloaded on PeMicro website. Chhose according used board, for instance
Freescale_MPC5554_1x32x512k_Freescale_H7F_32_Driver.PCP
For further detail I would recommend to contact PeMicro support:
https://www.pemicro.com/support/index.cfm