Put the original SYNC 2 system back in place. If SYNC 2 works normally, the wiring, ACM, SCCM, FCIM, vehicle network, and basic power supply are proven still working.
Start FORScan with a completely new vehicle profile. Let FORScan discover every module again with the SYNC 3 assembly installed.
Replace or test the LVDS cable and screen first. You must use a SYNC 3 screen and SYNC 3 LVDS cable.
Do not use random AsBuilt files. A 2017 Escape configuration is a different platform. A 2017 Edge uses a newer vehicle architecture than your 2013 Edge. Incorrect APIM AsBuilt can cause missing climate controls, wrong steering button behavior, cluster errors, and configuration DTCs. The SYNC 3 APIM configuration needs to represent a North American CGEA 1.2 vehicle and your actual Edge equipment. Do not change the BCM, SCCM and ACM to match donor vehicles.
The USB update is not a useful test. If the APIM is not completing boot, inserting an update drive will not do anything.
Use this database to help program the APIM to match your vehicle. https://cyanlabs.net/asbuilt-db/?filter=apim