This means if you have a converted unit and currently try to use the (not yet public / leaked) 4.30 DECH update you will get a brick... so consider yourself warned in advance!
What happens is when the bricked unit is powered on the light turns green for a few seconds, then you hear 3 beeps and its goes off.
It is suspected (unconfirmed) the reason why this bricking occurs in CEX to DEX converts on OFW 4.30 DEX is because the EID5 isn't changed, which is one factor separating the converted Retail to Debug / Test consoles from genuine and righteous DECH (DEX) consoles.
Finally, for those curious, the PS3 4.25 DEX update (also not publicly leaked yet) is not patched by Sony to brick converted consoles, so this would be the last PS3 Debug / Test Firmware you could update your converted console to (and go online with PSoN DEX) unless a work-around patch fix is discovered.
Stay tuned for more PS3 Hacks and PS3 CFW news, follow us on Twitter and be sure to drop by the PS3 Hacks and PS3 Custom Firmware Forums for the latest PlayStation 3 scene updates and homebrew releases!
Backup original nor_dump you do not lose it, if you want to make changes from CEX to DEX, as this was the name for dex_FLASH.EID0.NORBIN.
If you want to go back to the console original then you just repeat the name of your original nor_dump like this cex_FLASH.EID0.NORBIN and insert it into the root of your USB can do with rebug_tool_manager or OS on multiman.
Well when I try to change to Use eid5 : 89 CEX it works but then when I exit rebug toolbox and go back into it its set to No again and it always is set to no when I want to put it on eid5 PLZ respond if you know what the problem is.