I attempted to use Blackrose.exe but it doesn't work, then I trun to flash the cutsome hboot by manual in command prompt.
But the problem is I get the signature verfiication failed when I tried to flash any hboot_xxxxx.nb0 files by fastboot.
I have searched some relevant threads but no clear solution was found. (Some threads have posted the similar question but all the replies are problem solved without clear explanation.)
Any anybody can advise me ? How can I pass the signature verification in fastboot ?