The Downgrade (change the firmware version by a lower)
Sony does not downgrade of the console, from the time an update is installed, you can not revert to a previous version of firmware it is mentioned that you waive your rights to use an older version system software.
The downgrade is done mostly to run games (or other programs) pirated.
It is important to emphasize that if this is poorly made, it can cause blockage of the PSP ™ and render inoperative, and in this case the security is no longer valid.
To the extent permitted by applicable law, the rights that you have and enabling you to use the current version of the software system or access extinguished when installing a newer version of System Software on your PSP™, that the installation is carried out using a download manual or automatic realizes that SCE by an online network of SCE or is effected otherwise.
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