1. We gave you precise steps, if you don't follow them, you should expect a strong potential for overall failure.
2. If I am not mistaken, you cannot convert cex/dex without an existing eid_root_key located in the following path
/dev_hdd0/game/RBGTLBOX2/USRDIR/eid_root_key. Iirc it is a prerequisite to the conversion & the Rebug Toolbox would not let you start that process without it.
So if you didn't dump the eid_root_key, the console should still be in DEX mode.
Anyway if you are now stuck in recovery mode, you probably will have to reinstall Rebug D-REX 4.84.2 & try the conversion again.