help to repair boot lg m400dy! - GSM-Forum

spurs21 · 02-01-2021, 21:10

Hi friends, i have a lg M400DY download is disabled by kill switch, i understand that i need repair boot connecting by isp, could you guide me with the process please. Thanks in advance

layder · 02-02-2021, 11:12

For eMMC you can simply flash original LG firmware by vendor via EasyJTAG Plus software

spurs21 · 02-02-2021, 23:35

Quote:

Originally Posted by layder

For eMMC you can simply flash original LG firmware by vendor via EasyJTAG Plus software

Dear supoort i have read flash by vendor using easy jtag plus, now i can flash the same flash i have read before or have to download another one? Please guide me

layder · 02-03-2021, 09:08

Quote:

Originally Posted by spurs21

Dear supoort i have read flash by vendor using easy jtag plus, now i can flash the same flash i have read before or have to download another one? Please guide me

You you flash by vendor original LF kdz firmware - you problem is not daed boot, may you have hardware damage

If you read by vendor data from some model - you can also write it to you device

spurs21 · 02-08-2021, 21:59

Quote:

Originally Posted by layder

You you flash by vendor original LF kdz firmware - you problem is not daed boot, may you have hardware damage

If you read by vendor data from some model - you can also write it to you device

i have flashed using by vendor option, selecting Lg brand and selecting kdz firmware, this phone had a protection by kill switch, download mode disabled by this protection, like mdm i think, so that was the reason why i need to reflash the phone, no hardware damege sir, now pehone turn on and only goes to recovery and botoloop... please help me with correct procedure my friend, i will aprecciate it so much. Many thanks, best regards

layder · 02-09-2021, 09:15

I doun't know what partton have stored lock
you can try to
- make backup by partition
- after erase all
- write by vendor firmware
- restore security partition (nvram, protectst1/2 for MTK, fsg, modemst1/2 for qualcom, etc)

spurs21 · 02-09-2021, 23:44

Quote:

Originally Posted by layder

I doun't know what partton have stored lock
you can try to
- make backup by partition
- after erase all
- write by vendor firmware
- restore security partition (nvram, protectst1/2 for MTK, fsg, modemst1/2 for qualcom, etc)

the problem was that i made backup using read by vendor MTK option bro, after i erase all using emmc general tab, and after flash firmware this way: first flash rom2 and rom 3 using emmc tab, and after using by vendor optionselecting Lg option bro. now phone only turn on and goes to recovery, it doesn't work brom mode o flash mode.. what can i do bro please

layder · 02-10-2021, 10:17

Quote:

Originally Posted by spurs21

the problem was that i made backup using read by vendor MTK option bro, after i erase all using emmc general tab, and after flash firmware this way: first flash rom2 and rom 3 using emmc tab, and after using by vendor optionselecting Lg option bro. now phone only turn on and goes to recovery, it doesn't work brom mode o flash mode.. what can i do bro please

You need restore from backup
1) protectst1, protectst2
2) nvram, nvdata

also post me list of partition of you device

02-01-2021, 21:10	#1 (permalink)
spurs21 Freak Poster Join Date: Jul 2009 Location: México Posts: 154 Member: 1070713 Status: Offline Thanks Meter: 14	help to repair boot lg m400dy! Hi friends, i have a lg M400DY download is disabled by kill switch, i understand that i need repair boot connecting by isp, could you guide me with the process please. Thanks in advance

02-02-2021, 11:12	#2 (permalink)
layder Product Supporter Join Date: Jun 2002 Location: Belarus Age: 47 Posts: 3,188 Member: 13148 Status: Offline Thanks Meter: 2,948	For eMMC you can simply flash original LG firmware by vendor via EasyJTAG Plus software Last edited by layder; 02-02-2021 at 11:18.

02-09-2021, 09:15	#6 (permalink)
layder Product Supporter Join Date: Jun 2002 Location: Belarus Age: 47 Posts: 3,188 Member: 13148 Status: Offline Thanks Meter: 2,948	I doun't know what partton have stored lock you can try to - make backup by partition - after erase all - write by vendor firmware - restore security partition (nvram, protectst1/2 for MTK, fsg, modemst1/2 for qualcom, etc)