Chosen Solution
Hi guys, I have an iPhone 7 here, WiFi grayed out. Upon testing, I confirm the WiFi chip has problem and needs to be reballed. What I am not sure is the NAND chip. I know WiFi IC is bound to the NAND, so if the WiFi chip is to be replaced with a new one, then NAND must be removed and reprogrammed to unbind the the Mac address. However, I am not going to replace the WiFi chip with a new one, I just want to reball it. In such case, do I still need to remove the NAND chip and reprogram it? I checked on youtube, some repairers just reballed the WiFi chip and didn’t touch the NAND, however, some reballed both of them even they didn’t change the WiFi chip. So I am a bit confused. Do I need to remove/reprogram the NAND even I don’t replace the WiFi chip?
No need to reprogram anything if you’re just removing and reballing, that would be needed if you replace the Wifi IC to update the Nand info. Don’t bother too much about youtube videos, unless they’re from the few good and instructive Professionals around we all more or less know about for years, there’s a lot of BS out there.
