Chosen Solution
I have removed band memory chip on iPhone 7(I have done it multiple times, as I repair phones) nand drive shows successfully on the programmer but when I extract it there was no information came up( strange) no body has removed nand from this phone before question. 1 what could be the reason that no address or serial number is extracted from nand can an I get those all addresses from anywhere by imei or the phone is bricked?
Was there something wrong with the phone originally? E.g liquid damage, VCC_Main short, bad battery along with tristar fault? Any of these can cause short circuits to the NAND making it corrupt / fried and not fixable. Phone is probably bricked if you can’t extract the SN / Wi-Fi mac info from it.
Hi all helpers, i found the solution as WiFi address and Bluetooth address are more important than all of the rest information(as new phones have so many serial numbers) so so I found a service I can retrieve the Bluetooth address and WiFi address from the serial number and imei number. so for your information if it happens there is a solution for it.
If the removed memory chip didn’t provide anything, I don’t think there is any backup for baseband data anywhere else.