iPhone 7 Bootloop goes to Black Recovery Screen

Hi!

I got an Silver iPhone 7, that is bootlooping for around 4-5 minutes then goes to a black screen, it doesnt turn off it goes to Recovery from what i've found using 3uTools
I tried flashing with 3uTools and iTunes but it gives errors in both, i swapped the motherboard onto a fully working parts icloud locked Jet Black iPhone 7 and it still went into bootloop (i only tried itunes i think and it gave the same errors)
Is there anyway to save this device? i'm kinda sure is something defective on the motherboard