Download, MTK VCOM USB drivers from here
Download, latest SP Flash Tool from here
If you encounter any error while flashing your device, click here and see if it solves your problem
Report if you cannot download any of these files.
Note that this is a clone device of Sony Xperia with different funny
names like CMX, QMX, XBN etc. Normally a good way to know which file to
use is by reading the build id but sometimes the build id shows android
generic stuffs thus the best way to identify is by checking what’s on the board id.
if you are not sure of the file you want to flash, make a stock backup
with Miracle box, CM2, GSM Alladin etc so that if something goes wrong
you can put the phone back at it original state.
Most times, the problem we have with Sony Xperia Clone devices is hang on logo.
easiest solution to fix this problem is flashing just boot.img. If you
are faced with this hang on logo problem, simply backup(Read) boot.img
and lk.bin file using miracle box, gsm aladin, infinity cm2 etc
Then Flash back the two images backed up and the phone will be ok with no data loss.
DOWNLOAD SONY CLONE CMX Z5 STOCK ROM BELOW