I don't think it has a real serial number. I bought it second hand on yahoo flea market and the seller said it was a factory prototype model. When it was running before I bricked it, the cpu name showed AMD eng sample something, and there was a serial number in the lenovo vantage app, but putting it in lenovo's website showed no results. Unfortunately, I don't remember it now.

Rest of the info is in the title.
Model name : Lenovo Thinkpad Z13 Gen 1
Motherboard model: JZ3A0 NM-E071 REV0.3

I'm not sure what the type is. In the manuals it mentions 21D2 or 21D3...

Hello. If anyone has a working BIOS dump of the system, I'd appreciate it. My particular laptop seems to have a Macronix MX77U25650FZ4I42 (or MX25U25635F according to [URL="https://www.badcaps.net/forum/troubleshooting-hardware-devices-and-electronics-theory/troubleshooting-laptops-tablets-and-mobile-devices/bios-requests-only/100465-lenovo-thinkpad-l15-bios-request?p=1822794#post1822794"]this post[/URL]) which is not the Winbond W25R256JWEIQ in the retail model (at least according to the [URL="https://www.badcaps.net/forum/troubleshooting-hardware-devices-and-electronics-theory/troubleshooting-laptops-tablets-and-mobile-devices/schematic-requests-only/3170744-lenovo-thinkpad-z13"]schematic...

How did you solve it? I'm trying to read the same chip with that programmer as well.

Hello, I'm a student trying to fix my stuff.