can i just add - none of this is needed anymore!! search posts by me, for the link to the 3.40 oe-a rcos, its a zip file and includes all the OFFICIAL sony rco's decrypted by Z33 (i think its z33 anyway)
you can edit them in RCO Editor, & there is no need for any fixes. so you can have cold boot + psx games without hex editing or anything!
infact,
Re-Director thats the link for the RCO's for 3.40
all you need to do ie either 1) use the opening_plugin.rco from the zip to make your coldboot, or if you;ve already got 1, do 2) open RCO Editor, open you current coldboot file, extract all to a folder, open up the RCO from the zip, select replace multiple, find the folder you just extracted to, once its done, your done

just copy the file to your flash0 as usual