Ahh yes those memory issues from moderating team , I do not get them for some reason and remember very clear, funny is in it how you can remember stuff when you have done it personally
1. downgrader 999
2. install CFW 3.55 of your choice
3. install package with toggle_qa.pkg and use it to dehash system so there will be no RSOD, use key combo to be sure on network settings
> power off > enter recovery menu
4. install 3.55 OFW
5. format system from safe mode / format hdd externally
6. reinstall 3.55 OFW (only for NOR if you have formatted hdd externally)
7. Install CFW of your choice from safe mode.