@LAMedia
In Post #55 along with other info it says to read Post #47 for the generic procedure to find PCB P/N. Post #47 additionally has a link to the other specific PCB P/N thread and on the first page is [Only registered and activated users can see links. ] which details how to search for PCB in firmware. On the device you can also find the PCB in the hidden inventory menu behind the battery symbol on the "Where To?/Map" page. (Press and hold the battery symbol for ~5-6 seconds, then press the lower left corner repeatedly until you reach "Version Information" page. The second entry down is PCB P/N, shown as 105-xxxxx-xx format). Be aware that even having matching PCB P/Ns doesn't mean a conversion will always work and a bricking is still possible. Only matching HWIDs give an excellent chance of successful conversion provided the ancillary hardware is also present in the recipient device (e.g. BT module for Bluetooth, microphone for ASR).