You can try my firmware 12b restore guide HERE

 

LG site also provide Software restore back to stock.

LG MS500 Support: Find Manuals & Warranty Info | LG USA

 

um u can use my dedicated tread ^-^ everyone is happy with it c: 10i and all features

 

Is there a flashable 10i stock rom? My computers on the fritz.

 

12b for xperion! Yes! Needed this thread. Thanks. I was on KK

 

Try slimrom

 

Um KDZ_FW_UPD doesn't work for me. I don't think it's your computer. It locks up Windows 7 even in compatability mode for Windows XP.

Use the modwin uptest. It's in the same zip. It works but stops responding when extracting the KDZ and when the DLL calls the function to start the upgrade. Run it as administrator.

You'll get a bootloop. Factory reset using volume down + home + power. Then you can boot.

It works trust me.

Got from kit kat to full stock this way. Got confused at the boot loop. But took a leap of faith with the factory reset. And it worked!

Also make sure you got drivers installed from the zip not the new ones. You gotta restart!

Running jellybean xperion w/ freedom kernel. Love it!

Hope this helps.

Don't use KDZ_FW_UPD!