Thank you for posting your query in this forum, it's a great place to find answers.
I reviewed your post and I understand that you want to know whether there are any CPU upgrade options available for your computer.
Don’t worry, we will work together to resolve this issue and It’s a pleasure to assist you in this regard.
Please refer to the below service manual (Page 81) for the supported processors for your computer. However, I can see that the computer what you have is a customized computer so I recommend you to contact a local tech to make sure that the processor is supported.