Originally posted by another user
E3 FLASHER LIMITED downgrade 3.73 to 3.55 successful , the way is same as before, no changes !
and also we upload a good working manager,
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And also please note : after downgrade to 3.55, don’t install any other 3.55CFW or 3.55OFW, otherwise PS3 will get brick just install manager to play HDD game.
if you want play PSN, just upgrade to 3.73 with normal upgrade way (network or USB device).