blem

I don't know other solution for trashed partition system than buying working phone with broken lcd and swaping main board.

Report for D2302, sir

Battery already 100% charged. Setool still can't detected my D2302.
Setool and flashtool both use volume down to start flashing. And during flashing still using the volume button I don't think it works, because I can't get into flashmode and fastboot mode, sir.

Any suggest, sir?

I don't know history of those phones so i can't tell you what you should do.

xperia L : At that moment, I make modifications vold.fstab file to swap storage partitions. After rebooting, can't turn on anymore.
xperia E Dual : Tweaking system partitions with simple stuff, like enabling init.d. And after rebooting, can't turn on anymore.
And now the condition is exactly the same as my xperia M2, sir.

You must connect charged battery to phone before connecting it. 100% charged battery always recommended.

oke, sir. Being in charging since last night using wall charger.

by the way, I should do the same with my other xperia? xperia L and E dual.

Try to flash your phone using current Setool2 version in signed mode + alternative security bypass mode. If that will not work or your phone is not detected at all, bad news - buy new phone or working phone with broken lcd and swap main board. You can't fix that phone by tp.

thanks for attention, sir.
I try to use Setool2 a few minutes ago (without TP), and give me this log :
 

DETACH USB CABLE FROM PHONE
REMOVE BATTERY FROM PHONE
ATTACH TESTPOINT
PRESS "READY", THEN ATTACH USB CABLE TO PHONE

llbug: [\\?\USB#VID_05C6&PID_F006#6&1133f70f&0&3#{a5dcbf10-6530-11d2-901f-00c04fb951ed}] open error:  ... 
FAILED TO SETUP PHONE