Open sourcing the PSP code (or probably any other firmware) may not help protect you (or anyone) in terms of security or privacy. Here is where open source is

Open sourcing the PSP code (or probably any other firmware) may not help protect you (or anyone) in terms of security or privacy. Here is where open source is different from free software, and this is why free software is better than open source. Say for example, ddwrt, a very popular firmware used in several routers. Or simply saying, Linux (kernel) + busybox, a very popular combination of some open source codes used in several embedded systems: They are simply open source when they run on those systems, not free software. You can't replace their code with some (custom) versions most of the time. All you get is the source code, you may not be allowed to run custom version. You may not even be able to confirm if the code they gave is the code that is actually being run on those devices. As always said, that is enough to fit to the terms of "open source". And yes, just another reason why free software is (almost always) better than open source.