no cwm does not modify the bootloader/preloaderI found on mobile uncle tool chinese forum a lewa os 5 for 9520 ->http://share.weiyun.com/679934e3b4172e6259d260266b6daa44#
Can you see if we can try on zopo998? Thanks!
Does CWM flashing modify the bootloader? if not we should be able to flash it, right?