Just download the Symbian direct signature tool to sign. . It will be very convenient in the future.

Teach you how to install it. ;

It is generally installed in the date-fonts folder. If you want to uninstall the fonts, just go to the program management to uninstall the font driver, and then delete the fonts. If you want to change the fonts, just put the font file you are looking for. Just put it in there, rename it so it's at the top, and then restart. However, if you do not uninstall the previously installed fonts in advance, it may cause the computer to fail to boot. In this case, you can create a file named disable with the extension frt in the root directory of the memory card to boot. . You try. . If not, ask again. .