I guess that you have wrong .self file. ( 201kt is right one)
1.So you need to Install firmware again like u did before.
2. After it turns of make sure that it is 3.41 (still in Service mode)
3.so now put Lv2diag.self (File 2) to your usb. (delete all other files from usb)
4.After your ps3 turns off-->start without usb stick and enjoy =)
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