BIOS
Boot ROM.
flash the bios
Programming a motherboard typically involves configuring the BIOS/UEFI firmware settings, which can be accessed during the boot process. Users can update the firmware by downloading the latest version from the motherboard manufacturer's website and using tools provided in the BIOS or a USB drive. For custom features, developers may write low-level software and drivers that interact with the hardware, often using languages like C or assembly. It's essential to follow manufacturer guidelines to avoid damaging the motherboard.
Hacking the firmware depends on the PSP's motherboard, not the current firmware installed. If you're asking whether or not it can be made into a custom firmware, then the answer is yes, but all homebrew would have to be rewritten for it.
It is called Firmware and it holds the basic software needed on the motherboard.
Firmware is typically written in low-level programming languages such as C or assembly language.
It's not the firmware that matters, it's the motherboard. A hackable motherboard can have custom firmware installed no matter what version of the official firmware it uses. 'Unhackable' (at present) ones can't have custom firmware installed at all right now. All phat PSPs can be hacked, most slims can, but recent ones can't, and at present, PSP-3000's can't at all.
The area that holds all the startup instructions a computer needs to start is the BIOS (Basic Input/Output System) or UEFI (Unified Extensible Firmware Interface) firmware. This firmware is stored in a non-volatile memory chip on the motherboard and is responsible for initializing hardware components and loading the operating system during the boot process.
Programs stored on ROM chips are called firmware. The motherboard stores the keyboard controller support program on the ROM chip.
Depending on the context, those could be referred to as hardware or firmware.
To answer your question it is a mother board. Notice the spelling. The firmware of the computer runs from the motherboard (firmware is important software needed to run hardware correctly). Generally referred to as a "Mobo" the motherboard runs everything your computer uses to run, it is essentially the heart of your computer. The graphics card, the power source, the Disk drives, and much more all depend on the motherboard to centralize and keep your computer running.
CMOS or BIOS configuration settings