Hey, so I suppose that this thread will also be used for Let's Go stuff if anyone wants down the road. lol
Anyways, figured I'd share some ways to give and aid anyone who'd want to edit their save file(s) with completely legal and obtainable data on their PokeDex and inventories:
!Make a backup of your save if you attempt to do any of this!
Let's Go legally complete PokeDex
The following will give you a complete PokeDex with all the 153 obtainable Pokemon except Shiny forms of Starter Pikachu (Starter Eevee doesn't have its own page) and Mew.
Instructions (for Windows):
Download and install HxD if you don't have it.
Open your savedata.bin into the program.
Click on Edit-->Select Block... (or Ctrl+E).
Input 2A88 for Start-offset and 4AEF for End-offset.
Click OK.
Highlight and copy the entire values in the spoiler below, and then right-click the highlighted part in the program and select Paste write (or Ctrl+B):
7. Select File-->Save (or Ctrl+S).
8. Open the hex edited savedata.bin into PKHeX, and feel free to change the PokeDex displayed forms along with Min and Max Height/Weight values to your desire if needed, then export the save file and import it back into your game.
Let's Go legal Inventory guide
The following will help you with injecting legal and non-Key Item inventory assets.
Medicine Pouch: Set the count to whatever you want and press Give All-->All
TM Pouch: Set Count to 1 and press Give All-->All (If you happen to obtain a TM you didn't get in-game after doing so, just set it to 1 again)
Ball Pouch: Set the count to whatever you want and press Give All-->All
Item Pouch: Give yourself the following if you don't have them, and then modify their individual count if you'd like:
Repel
Super Repel
Max Repel
Tiny Mushroom
Big Mushroom
Pearl
Big Pearl
Stardust
Star Piece
Nugget
Heart Scale
Helix Fossil
Dome Fossil
Old Amber
Bottle Cap
Gold Bottle Cap
Lure
Super Lure
Max Lure
Battle Item Pouch: Give yourself the following if you don't have them, and then modify their individual count if you'd like (Mega Stones are Key Items in this game as well as the Key Stone itself and must have a quantity of 1):
Guard Spec.
Dire Hit
X Attack
X Defense
X Speed
X Accuracy
X Sp. Atk
X Sp. Def
Power-Up Pouch: Set the count to whatever you want and press Give All->All
Candy Pouch: Set the count to whatever you want and press Give All->All
Finally on a side-note if anyone cares, I've added the recent games' NPC trades in all languages! So feel free to use and modify them however you'd like using the .txt included.
I know and apologize it wasn't really anything, though, I should hopefully be back for proper researching with Gen 8 in I suppose late 2019 or whenever then and I get the time, so this is adieu with Gen 7 for me.