Creating modified boot.img and enabling adb during first boot.

Rajdip

Senior Member
Dec 9, 2015
309
263
0
Kolkata
Modified boot.img of a rom is required to be flashed on that rom so that it works with TWRP.
Enabling ADB during first boot creates a way out in case your phone bootloops or stuck at MI logo and also hardbricked.
Many people hardbricked their phone while flashing MIUI based roms through TWRP, and they had to test-point to bring their phone back to life, my mod enables adb during boot and so people who used my mod and hardbricked their phone can access adb when their phone is stuck at MI logo or bootlooping and thus revive their phone.
Tools needed:-
1)Notepad++ (google it and download)
2)Android Image Kitchen(AIK) http://forum.xda-developers.com/attachment.php?attachmentid=3638835&d=1454959265

Steps:-
1)Download the required rom and extract its boot.img

2)Copy the boot.img to AIK folder and drag boot.img and drop it on unpackimg.bat

3)Open ramdisk folder and look for default.prop , open them with Notepad++

4)Editing default.prop Note:- This will enable adb at first boot

5)Change
Code:
ro.secure=1 to ro.secure=0
ro.adb.secure=1 to ro.adb.secure=0
ro.debuggable=0 to ro.debuggable=1
persist.sys.usb.config=none to persist.sys.usb.config=adb
delete the line ro.secureboot.devicelock=1 if present
OR (Alternate way)(recommended)
open ramdisk and look for fstab.qcom, open with notepad++ and search for ",verify" (without quotes) and delete it and save.

6)Now execute repackimg.bat, a image-new.img file will be compiled.

7)Flash the image-new.img through TWRP or through fastboot using "Fastboot flash boot image-new.img"
That's all :)
P.S:- Remember only use Boot.img specific for the miui version you wanna run, boot.img version not matching with MIUI version
will cause the Wifi to stop working.
Press thanks If this helped.:good:
Any queries feel free to ask me.:laugh:
 
Last edited:

SkinCoffin

Senior Member
Nov 15, 2015
139
20
0
Thank you! I just did it. It has booted and almost over in the "Optimizing apps" window. Thing is, I did forget to wipe system, data and cache before flashing, should I do it again or will it be fine like this?

EDIT: I rebooted the phone into recovery, wiped system, data and cache, flashed the ROM zip and wiped cache and dalvik cache. I booted the phone and it showed the Mi logo, then 4 circles screen flying around (green, red, blue and yellow) and it has been like this for like 5 min now.. Did I do something wrong? I'm starting to worry to be honest.
 
Last edited:

Rajdip

Senior Member
Dec 9, 2015
309
263
0
Kolkata
Thank you! I just did it. It has booted and almost over in the "Optimizing apps" window. Thing is, I did forget to wipe system, data and cache before flashing, should I do it again or will it be fine like this?

EDIT: I rebooted the phone into recovery, wiped system, data and cache, flashed the ROM zip and wiped cache and dalvik cache. I booted the phone and it showed the Mi logo, then 4 circles screen flying around (green, red, blue and yellow) and it has been like this for like 5 min now.. Did I do something wrong? I'm starting to worry to be honest.
it takes time to boot for the first time, did it boot now?
 

SkinCoffin

Senior Member
Nov 15, 2015
139
20
0
Try again, goto TWRP, wipe system,data,cache,dalvik and flash the rom. Now reboot...
So I shouldn't reinstall TWRP through fastboot?

EDIT: Ok so I restarted the phone and it booted normally into the ROM, everything seems alright. Will check if I have any problem, if I do I'll just reflash it.
 
Last edited:

Mayoz

Senior Member
Dec 16, 2013
229
88
0
Papua
i do exactly like your tutor...i edit boot.img n delete ",verify"
repack than delete original boot.img, than use moded boot.img... but wifi doesn't work...
where my mistake...?
 

Rajdip

Senior Member
Dec 9, 2015
309
263
0
Kolkata
i do exactly like your tutor...i edit boot.img n delete ",verify"
repack than delete original boot.img, than use moded boot.img... but wifi doesn't work...
where my mistake...?
are you sure you are using the boot.img of the MIUI version you are flashing? there is two 7.2.3.0 version of boot.img one for global and one for china. Anyway try this and see if wifi works, goto TWRP(I hope you've already deleted the emmc_appsboot file), select mount and then tick on mount system as read only. Then flash the rom. This method will replace TWRP with MIUI recovery but your wifi should start working.
 
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Mayoz

Senior Member
Dec 16, 2013
229
88
0
Papua
are you sure you are using the boot.img of the MIUI version you are flashing? there is two 7.2.3.0 version of boot.img one for global and one for china. Anyway try this and see if wifi works, goto TWRP(I hope you've already deleted the emmc_appsboot file), select mount and then tick on mount system as read only. Then flash the rom. This method will replace TWRP with MIUI recovery but your wifi should start working.
yes using the boot.img of the MIUI version to flashing...from recovery rom stable 7.2.3.0 china....maybe my mistake i replace emmc_appsboot file from miui forum...not delete "will replace TWRP with MIUI recovery...' still can booting? i already UBL...
 

Rajdip

Senior Member
Dec 9, 2015
309
263
0
Kolkata
yes using the boot.img of the MIUI version to flashing...from recovery rom stable 7.2.3.0 china....maybe my mistake i replace emmc_appsboot file from miui forum...not delete "will replace TWRP with MIUI recovery...' still can booting? i already UBL...
I didnt get you, can you be more clear?
 
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Lukatech

Member
Apr 18, 2016
7
2
0
Hello, I've followed a certain tutorial and flashed a fastboot Rom with modified emmc file in attempt to unlock bootloader by force because, even after two weeks of trying, I can't get a confirmation SMS from xiaomi to confirm sending an unlock request. After doing it and flashing TWRP onto my device, I'm still unable to enter recovery. Just shows a picture of device and a disconnected usb cable. I need to flash SuperSU in order to get root access.

Because this device is getting me really confused, please answer a couple of questions for me. :confused::confused:
If I flash a recently uploaded global stable ROM 7.2.3.0. and flash TWRP with a modified boot image from this tutorial, will I finally be able to enter recovery and install SuperSU?
Flashing will probably relock my bootloader. Is it possible for me to finally enter TWRP and flash SuperSU after flashing the new boot image?
I've thought that I could enter TWRP just by unlocking the bootloader but it seems that I've missed something. I can't remember last time a phone got me this confused. :eek:
My only goal here is being able to enter TWRP and rooting my phone, I gave up on unlocking the bootloader officially because I can't ever get that confirmation SMS.
I appreciate the help!! :fingers-crossed: