Star Wars Jedi Fallen Order is a game you have to explore thoroughly to get every upgrade and secret, and like classic Metroidvanias, there will be some things you just can't access the first time through. However, one upgrade in particular that keeps on cropping up is the Star Wars Jedi Fallen Order Scomp Link.
The Scomp Link is an upgrade for BD-1 which allows the droid to access certain special item boxes and use particular equipment around the map - however, if you try to use them you'll get a big black message that reads "Scomp Link must be repaired to use this device". So where is the Jedi Fallen Order Scomp Link? We can tell you.
How to get the Star Wars Jedi Fallen Order Scomp Link
To get the Scomp Link you need to travel to the planet Zeffo - it's the first choice of planet you get to make, between that and Dathomir. You'll need to keep on playing through the map until you get deep inside the Tomb of Eilram and pick up the Force Push power. You will have essentially completed the story mission at this point, and will have to head back to the ship. However, there's one stop you'll need to make.
You may remember an area called the Weathered Monument, which had a few Stormtroopers and a large broken door you couldn't get past. It's at the map point above, and the door is below. You need to head back to this area and use Force Push on this broken door.
Once you've got back to the now-very-windy Windswept Ruins and dealt with the Stormtroopers there, just keep heading forward and you should unlock a shortcut to basically the area you need to go, or at least right next to it. Do not take the path to the right, just yet.
Once you've pushed open the door you'll find yourself in an Imperial facility built into the statue. Keep on going on, climb a metal wall, and you'll find a workbench where you can upgrade BD-1 with a Scomp Link repair. You can now access all the Scomp Link equipment and boxes in the game! Have fun!