Unhappy Zophone I5 MTK6577 bricked, tryed everything for a week, please help me

Hello!

I've got bricked Iphone 5 clone on MTK6577.
This phone was bricked because I flashed wrong firmware, but it still detects as "MTK USB Port" (PID_0003) when I plug it in and don't press any buttons on it.

I have backup from the 100% same phone, both bricked and working phones were from the same seller, bought together and came in one box.
As I understand phone has a chance to be unbricked, because Windows still detects it (PID_0003 means that Bootrom is alive).

So what I did this last week to unbrick it:
  • I tryed to flash backup with different versions of Sp flash tool (from 3.12.06.01 to 3.1336.0.198)
  • I tryed to flash first two blocks (preloader and dsp_bl)
  • I tryed to reinstall drivers and changed them
  • I tryed to flash it on 5 different PCs with Windows Xp(two different), Windows 7, Windows 7 64, Windows 8
  • I changed COM port number.

And always got this error: S_DA_DRAM_NOT_SUPPORT (3004) and when I use older Sp Flash Tool versions it ends with error: S_DL_GET_DRAM_SETTINGS_FAIL (5054). Even if I flash only PRELOADER and DSP_BL blocks.

How it happens:
I disconnect the device from PC, choose scatter file in Sp Flash Tool, push "Download" button, connect the device.
After that red line fills in the bottom 100% and after some seconds MTK USB Port dissapears from device manager and I hear sound of "unplugged device" (sometimes it sounds twice). In the bottom of Sp Flash Tool driver name changes to DA USB VCOM Port and S_DA_DRAM_NOT_SUPPORT (3004) error appears.

I have no idea what to do and anyway thanks to everybody for your answers and advices in this thread.

Some details about the phone from MTK Droid Tools:

Hardware : MT6577 (MT6589 is Fake!)
Model : iPhone5
Build number : ALPS.ICS2.MP.V1.18
Build date UTC : 20130822-011857
Android v : 4.2.0
Baseband v: MAUI.11AMD.W12.22.SP.V14, 2013/07/01 20:22
Kernel v : 3.0.13 (root@microhand-desktop) (gcc version 4.4.3 (GCC) ) #1 SMP Thu Aug 22 09:17:28 CST 2013
Uboot build v : MAIN2.2.ubt.2443
LCD Driver IC : 1-nt35510_mipi

Also here is screenshot of Sp Flash Tool 3.1336.0.sn198 when I get this error.

If you need any other information, just ask and I'll do my best to get it. Please help!
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