Linking PSN with SEGA ID help?

[r00tabaga]

My brother just got a Vita (they're super cheap ATM) and I'm trying to link his Sega ID up to his PSN acct and it's giving me an error No. 685 what should I do?
I'm putting in his ID, then password, then the left option. Then it goes to a screen where I have to enter something and then pick one of 3 choices. Getting error 750 now. Jeez.

Any help???

[r00tabaga]

Nobody plays on Vita or understands kanji?

[TheszNuts]

Screenshot the message

[r00tabaga]

An email gave me a code to input. Thx.

[CocoCrispy]

Since you've figured it out, I may as well chime in for anyone that may google search for this topic in the future.

Error 685 means you entered the wrong Sega ID information. Check lettercasing if you get this error.

Error 750 means they sent an email with an authentication key that you need to input in order to give the game permission to link your psn to pso2.

If you get Error 751, that means you entered an authentication key that does not match the one they sent you.

[laz305]

How do I uninstall compatibility pack?

[laz305]

Ok now what’s error 702?