 Sony warn against PSP update
 Sony warn against PSP update
Sony have said on their Japanese site:
CAUTION: This update is only for customers who obtained PSP (PlayStation Portable) for Japan which model number is PSP-1000 or PSP-1000 K. Upon completion of preparing, we will announce update information for the other countries/areas customers via SCE Group Web Site or other channels . For theses customers who obtained PSP in the other countries/areas, please DO NOT update PSP through this web site.
I know lots of people have already updated their firmware on US PSPs - let's just hope there are no side effects.* We will keep you informed about an official US upgrade. http://www.PSPHome.com/index.php?do=viewarticle&id=266 | 
