Editing the legacy boot logo for Windows 10

You will need at least four tools to do this. Works on any edition of Windows so long as you carefully reproduce the steps shown here.
7-Zip: 7-zip.org
Paint.net: getpaint.net/d...
DISMGUI: github.com/mik...
ResourceHacker: www.angusj.com...
You can also just use your favorite image editor like Gimp or Photoshop. Just remember to save your custom bitmaps in the exact widths and heights of the original files and as 24-bit images, rather than 32 or 8/4/1-bit
Because windows uses digital certificates for its boot files, loading custom files requires disabling checks for driver signatures on every boot. This will not work if you try to disable driver signature checks with bcdedit, so it will have to be done manually in the legacy boot screen. You will need to make a batch script:
@echo off
bcdedit /set {default} bootmenupolicy legacy
bcdedit /set {globalsettings} advancedoptions true
Sometimes you will also need to take ownership of bootres.dll since it could be protected under TrustedInstaller. You will need to download WinaeroTweaker or use a registry patch: winaero.com/do...
Music: Call of Duty Modern Warfare 2 by Lorne Balfe and Hans Zimmer
• MW2 Soundtrack 12.Of T...
• MW2 Soundtrack 13.Cont...
00:05 Setting up some bangers
01:02 Examining bootres.dll file
01:29 Downloading ResourceHacker
02:42 Downloading DISMGUI
02:55 Opening DISMGUI
03:10 Opening the wim file
03:14 Mounting wim file to folder
03:23 Begin editing bitmaps using Paint.net (Multiply + Color picker)
13:51 Commit changes to wim file
14:30 Cleanup wim file by removing DELETED folder
14:42 Inject wim file as binary in DLL
15:20 Prepare zip file for user who I requested to do this

[@RoozerXC]

00:05 Setting up some bangers
01:02 Examining bootres.dll file
01:29 Downloading ResourceHacker
02:42 Downloading DISMGUI
02:55 Opening DISMGUI
03:10 Opening the wim file
03:14 Mounting wim file to folder
03:23 Begin editing bitmaps using Paint.net (Multiply + Color picker)
13:51 Commit changes to wim file
14:30 Cleanup wim file by removing DELETED folder
14:42 Inject wim file as binary in DLL
15:20 Prepare zip file for user who I requested to do this