Check to make sure the version on CCAPI you are using is compatible with the new firmware u are using. Otherwise Rebug has something in their settings section where you can set it as well.
Having the same issue here. I have a account that was already set up months ago on it. When I go through everything to sign in on that account it does. When I try to make a new account I get error code 80023017. I have a new jailbreak to sell but I can't if you can't setup an account on it.
I have a CECH 2501A with RSOD. I can't even get it into recovery (safe) mode to even attempt to fix it. When I turn it on it gies to a loading screen initially to try and update the update I was attempting to install when this happened. Then it goes to RSOD from there. It is on Rogero 3.55...