Yukai Li GMMan

`upgrade_app`

upgrade_app is the built-in upgrade flasher on the PlayStation Classic. It reads an upgrade file from USB, verifies it, and flashes it. In normal boot, it needs to be called to start the upgrade process. In recovery boot, it is automatically started and polls for files on an attached USB drive to flash the normal system. The program takes a single argument as a command. They are:

normal: Reboots the system to recovery and waits to flash a normal system. It will refuse to boot into recovery if it detects recovery is not successfully

The install isn't too bad as long as you have shell access and can work your way around the command line. Assuming you have BleemSync payload installed:

Download and place the new kernel image on a USB drive.
Plug the PSC to your computer and turn it on.
Plug in the USB drive to the PSC.
Open a telnet connection to the PSC.
Depending on whether you're booting a solution off the USB drive, you may need to mount it. If you don't see anything in /media, do this:
```
systemctl stop usb_watch
```

mount /dev/sda1 /media

PlayStation Classic power management system, documented

This document describes the power management system on the PlayStation Classic. It is mostly focused on the power_manage executable: the command line arguments, control files, and processes. It'll also touch upon the system service setup and startup script.

There are a few components to the power management system: the startup script, the power management service, thermal kernel modules, and supporting programs such as the USB reset script and thermal handling scripts. Let's start with

	#!/bin/sh -e

	start() {
	echo "rndis" > "/sys/class/android_usb/android0/functions"
	echo 1 > "/sys/class/android_usb/android0/f_rndis/wceis"
	echo 1 > "/sys/class/android_usb/android0/enable"
	sleep 1
	ifconfig rndis0 169.254.215.100 netmask 255.255.0.0
	}

	using System;
	using System.IO;

	namespace GameAndWatchBackdropToGif
	{
	class Program
	{
	static void Main(string[] args)
	{
	if (args.Length != 2)

	using System;
	using System.IO;
	using SixLabors.ImageSharp;
	using SixLabors.ImageSharp.Formats.Gif;
	using SixLabors.ImageSharp.IO;
	using SixLabors.ImageSharp.Memory;

	namespace DrawingSongConv
	{
	class Program

	static void DecompressRwData(BinaryReader br, int init_pos, string savePath)
	{
	br.BaseStream.Seek(init_pos + 4, SeekOrigin.Begin);
	int startOffset = init_pos + 4 + br.ReadInt32();
	uint length = br.ReadUInt32() >> 1; // lowest bit indicates whether to add base from r9
	uint dest = br.ReadUInt32();
	br.BaseStream.Seek(startOffset, SeekOrigin.Begin);
	File.WriteAllBytes(savePath, DoDecompressRwData(br, length));
	}

	---------------------------------------------------------------------------------------------------
	--
	-- String Utils
	--
	---------------------------------------------------------------------------------------------------

	function ArgToString( arg )
	if not arg then
	return ''
	end

	# Copyright (C) 2012 The Android Open Source Project
	#
	# IMPORTANT: Do not create world writable files or directories.
	# This is a common source of Android security bugs.
	#

	#import /init.${ro.hardware}.rc
	import /init.usb.rc
	import /init.trace.rc

	steam_log_in:
	image:
	name: "steamcmd:latest"
	entrypoint: [""]
	script:
	- "# Running SteamCMD"
	- "cp -r ssfn_cache/. ~/.steam \|\| :"
	- echo "${STEAMCMD_STEAMGUARD}" \| steamcmd +login "${STEAMCMD_USER}" "${STEAMCMD_PASSWORD}" +quit
	- mkdir -p ssfn_cache
	- cp -r -t ssfn_cache ~/.steam/ssfn* ~/.steam/config