From what I can read on many forums that there are two Anti Privacy (AP). The first AP is a random freezing due the reads under 0x8000. This happen only on old ez5 (v1, v2 and Plus). The second AP, you can’t earn any exp point once a pokemon is defeated in combat. This second AP can’t be handled by the ez5i’s special mode and of course by the normal mode of old ez5 (v1, v2 and Plus).
You can use xdelta UI tool and the patch below to patch and fix your roms.
Patch for Pokemon Black & White
(All links are good. Checked OK )
Download Patch fix Anti Privacy and No EXP for Pokemon Black & White