How much of a boon is this for jailbreaking, reverse engineering, and mitm really?

client on startup asks: hey server do you have any ads for me

server: here are latest ads

btw, the ads are capable of code execution for whatever reason so now you have an RCE on your hands for your client

Been wondering this as well. I also don’t really understand the mitm to jailbreak pipeline

Some smart devices pull config files from a server. By mitming that, you can change the config to enable some sort of developer mode on the device.

Maybe intercept firmware update and then reverse engineer it and find rce?

The fw could be encrypted

military grade SSL

Seed is '123456', much more random than '4'