LG K430TV write ROM2 (Boot) from Firmware
 

was trying Flash LG K430TV, but process fail. Now is recognized MediaTek.
I did the Pinout an tried Connect with Easy JTag, buts says tha eMMc is DEAD.

I dont know whats happened to eMMC die during flash. I think de firmware of eMMC was dameged . What coud have been?

So I removed eMMC chip. I am using another eMMC, KMQE10013M.
Original was KMF310012M.

I will try repair using ROM from K430TV. My friend give me EXTCSD for this device.

Log:
eMMC CID : 150100514531334D4207A04FE0BD433F
eMMC CSD : D02701320F5903FFF6DBFFEF8E40400D
eMMC Manufacturer ID: 0015 , OEM ID: 0100
eMMC Date: 04/2016 Rev.0x7
eMMC NAME: QE13MB , S/N: 2689589437
eMMC NAME (HEX): 514531334D42
EMMC ROM1 (Main User Data) Capacity: 14910 MB
EMMC ROM2 (Boot Partition 1) Capacity: 4096 kB
EMMC ROM3 (Boot Partition 2) Capacity: 4096 kB
EMMC RPMB (Replay Protected Memory Block) Capacity: 4096 kB
EMMC Permanent Write Protection: No
EMMC Temporary Write Protection: No
EMMC Password Locked: No
Extended CSD rev 1.8 (MMC 5.1)
Boot configuration [PARTITION_CONFIG: 0x48] Boot from:ROM2 (Boot Partition 1)
Boot bus config [177]: 0x00 , width 1bit , Partition config [179]: 0x48.
H/W reset function [RST_N_FUNCTION]: 0x01
High-capacity WP group size [HC_WP_GRP_SIZE: 0x00004000]
Partitioning Support [PARTITIONING_SUPPORT]: 0x07
Device support partitioning feature
Device can have enhanced tech.
Partitioning Setting [PARTITION_SETTING_COMPLETED]: 0x00


Boot from:ROM2 (Boot Partition 1): How can I write ROM2 (Boot partiton) from Firmware?

You need run "preloader pareser" at "Utilites" tab to view list of supported eMMC by preloader.

MTK CPU based phones have bootconfig depended where is preloader placed:

if preloader write to ROM2 boot config is: Boot configuration [179] / Boot Bus Config [177] / H/W Reset Function [162]: 0x48 / 0x00 / 0x01

if preloader write to ROM3 boot config is: Boot configuration [179] / Boot Bus Config [177] / H/W Reset Function [162]: 0x50 / 0x00 / 0x01


there is no difference where the preloader is.
it is important that the bootconfig points to it

you can write ROM2 as backup of ROM2 at first page (eMMC general) - Select ROM to access, select file, write binary file

you can write preloader file to ROM from FlashTool firmware - you need open firmware at "Write by vendor" tab, select Mediatek, choose scatter file, select partititon to write, write it

How to interpret it:

preloader_0_1.bin
Found 10 supported eMMC CID:
name = 'HAG2e' hex = 0x484147326505 [SKHYNIX]
eNAND_H26M52103FMR/16GB @FBGA169
eNAND_H9TQ17A8GTMCUR-KTM/16GB @BGA221
eNAND_H9TQ17A8GTMCUR-KUM/16GB @BGA221
eNAND_H9TQ17ABJTMCUR-KTM/16GB @BGA221
eNAND_H9TQ17ABJTMCUR-KUM/16GB @BGA221
name = 'QN16MB' hex = 0x514E31364D42 [SAMSUNG]
name = 'Q316AB' hex = 0x513331364142 [SAMSUNG]
name = 'Q313MB' hex = 0x513331334D42 [SAMSUNG]
moviNAND_KMQ310013M-B419/16GB @BGA221
name = 'F312MB' hex = 0x463331324D42 [SAMSUNG]
name = 'F722MB' hex = 0x463732324D42 [SAMSUNG]
moviNAND_KMF720012M-B214/8GB @BGA221
name = 'Q31SMB' hex = 0x513331534D42 [SAMSUNG]
name = 'QE13MB' hex = 0x514531334D42 [SAMSUNG]
name = 'Q316BB' hex = 0x513331364242 [SAMSUNG]
name = 'FE12MB' hex = 0x464531324D42 [SAMSUNG]

"you can write ROM2 as backup of ROM2 at first page (eMMC general) - Select ROM to access, select file, write binary file"

But I dont have DUMP.

I will read about the function of preloader to understand the process.

If you not have dump, you can write firmware to phone with mediatek CPU via FlashTool

If you phone not connect as "MTK VCOM port", you need to desolder eMMC and check it, and write correct preloader from firmware using "Write by vendor" Tab at EasyJTAG plus software, also know as "eMMC Tool Shuite"

So if I flash using "Write by Vendor" from DKZ file i don't need write ROM2-3?
Rom2-3 will be write from KZD file?

if you hover over a row in a table, you can see that the preloader is written to ROM2