how can I change the contents of /proc/product_name_extra? I have a rooted device and need to change the contents of /proc/product_name_extra from Prod to Eng. I have tried cp, mv, echo, and vi. I get IO error most commonly and no matter what perms I set I cannot edit the file. Any help would be greatly appreciated
/proc isn't a real filesystem, so the 'files' in it can't be changed by normal means. Rather, it gives file-like access to the system state. The only way to change what it reports is to actually change the system: in this case, that means flashing your device with an engineering ROM instead of a production ROM.