Yes, you can go Rogero to Rebug.
<How to downgrade steps>
1.Install [Rogero3.55 Downgrader RSOD] on your CFW PS3 (Now: Rogero 4.41)
2.Install [Toggle QA] on your CFW PS3 (Now: Rogero3.55 Downgrader)
Note: If you need QA Flag is on (Combo Command: L1+L2+L3+R1+R2+Digital Pad Down on [Network Settings])
3.Install [Rogero3.55 v3.7A] on your Downgrader FW PS3 (Now: Rogero3.55 Downgrader)
Note: This Modded FW version displayed [v4.25] on System Settings Information.
: but you can ignore that displayed version
4.Install [OFW 3.55] on your CFW PS3 (Now: Rogero3.55 v3.7A(displayed 4.25))
5.Install [Rebug 4.41 or 4.46] on your OFW PS3 (Now: OFW3.55)
check this:
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Note: Rebug CFW Edition is 3 types are exist.
: 1st, for DEX [D-REX Edition]
: 2nd, for CEX [REX Edtion] (This edition is standard)
: 3rd, for CEX [LITE Edition]
6.Complete !!
too easy way !!