Update didn't work for me. I tried twice. Each time it gave me a blue screen on first reboot. I went into the UEFI Bios and found that the boot disk priority had been changed by the update. I changed it back. Restarted and setup continued. Next reboot another blue screen. Went into UEFI bios and changed the boot disk sequence again. Rebooted and setup went into the revert to previous version mode.
See Nucleus post 3 above your post. In his signature look for Updated ESD Decrypter for Win 10 Build 10240. Download this file and open with something like WinRAR. Then read the readme txt file and follow instructions. I dragged & dropped the file W10 ESD file onto decrypt.cmd and chose option 1. Worked fine. Good luck. Sorry just seen Nucleus reply above.
Told you so! Microsoft did say it will release RTM in the fast ring today (but surprise me it was also on the slow ring)
Pl-pl x64 link htxxtp://tlu.dl.delivery.mp.microsoft.com/filestreamingservice/files/62b97750-45ea-4df1-9e34-a94376be581f?P1=1436992395&P2=301&P3=2&P4=pfBdG5O6FYCEQ%2bXhkZpIAscaPGjCkPklw2VIyFqlJU4%3d