Is there any serious reason not to open the unit this way? I opened it once and closed it up again and the fit is still tight and it still works, I just couldn’t find the jumper. Is it microsized?
Some of these models (listed as Jumper without a clickable Jumper Picture link) may not even have holes for you to jump and disable WP - your only option might be CR50
In case it’s helpful to anyone who knows more about how to find the jumper that might or might not exist, here is a folder of images of the system board
https://drive.google.com/drive/folders/1CII85HzSiNJH15Xt15YqVfyM5FF9cs-j?usp=sharing