Irrelevant
Hi @Empty welcome to the /e/ forum. I am afraid that the SM-J500FN is not on the List of devices supported by the easy-installer ~~nor on the https://doc.e.foundation/devices.~~ The SM-J500F appears here https://doc.e.foundation/devices/j5lte (it is a Qualcomm MSM8916 Snapdragon 410) … right now I am not certain of the significance of the N.
If you were concerned that you cannot get the phone out of Download mode just press Volume down + Power for 10 seconds and the phone will reboot normally. The device it is still showing
SYSTEM STATUS: Official
WARRANTY VOID: 0x0
Edit if you boot into Recovery mode you could learn the devicecode (it is in a format similar to “j5lte”)