Not in Flash Memory
The target has been halted too late in the UEFI boot sequence to seach for PEI modules.
Resume the target and halt it early enough to intercept the flash memory region.
Could not load symbols (no symbol path information)
The BIOS does not contain debug information.
Compile the modules with debug information.
<path_to_efi_file> does not exist
.efifile does not exist or cannot be found by the debugger.
Create path mapping rules as described here.