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Step 1:
Start Charles and log into PSN/try it. Now Navigate to the left bar:
Now search for your CONSOLEID and copy it.
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Step 2:
Go to TOOLS - REWRITE and add a new "rule" to the PS3 Auth Server (shown in the left window)
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In the First value box, put your ID and in the Replace value box , put another ID of other PS3.
WARNING: DONT WORK WITH RANDOM IDS.
P

1 id works with a couple of PS3.
source
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but the source is in german