If you have
CONFIG enable = OFF, i.e. rest is ignored and default, internal, crystal reference is used
equivalent configuration is
CONFIG enable = ON, i.e. RSTCFG = config from pins below
BOOTCFG1=OFF,
BOOTCFG2=OFF, i.e. internal
PLLCFG0=ON,
PLLCFG1=OFF and i.e. crystal reference
WKPCFG = ON,
BOOTCFG/PLLCFG description you may find in the device's RM.
Anyway PLLCFG configuration needs to fit used HW setup, BOOTCFG should not matter in the context of debugger connection and downloading SW unless device is censored.
If you have
CONFIG enable = OFF, i.e. rest is ignored and default, internal, crystal reference is used
equivalent configuration is
CONFIG enable = ON, i.e. RSTCFG = config from pins below
BOOTCFG1=OFF,
BOOTCFG2=OFF, i.e. internal
PLLCFG0=ON,
PLLCFG1=OFF and i.e. crystal reference
WKPCFG = ON,
BOOTCFG/PLLCFG description you may find in the device's RM.
Anyway PLLCFG configuration needs to fit used HW setup, BOOTCFG should not matter in the context of debugger connection and downloading SW unless device is censored.