[V1][ENGINEERING][ROM] OFFICIAL Engineering Firmware for MERLIN (Redmi Note 9 / Redmi 10X 4G)

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VD171

VD171

Senior Member
Jun 21, 2012
2,961
2
2,209
127.0.0.1
LG K10
Samsung Galaxy J7
SubwayChamp said:
First off thanks for your effort and support for this device, I want to ask you in case you know a few things:
Now I can't boot to some ROMs (KangOS, Nusantara, Pixel Extended, LineageFE) (Only could with HykonOS); the others redirect me to either TWRP or OFR and I don't want to flash the entire ROM to fix that, I flashed the vbmeta, format, flashed Magisk with no avail.
- Will this firmware allows me to boot completely to system so after can flash other ROM without set it up all again?
- Which file I have to avoid to flash, maybe preloader?
- Any of the 4 scatter and also the scatter attached is accepted for SP Flash tool (v5,1728), what other can I use? Or I have to download the official ROM to use it on it, though.
- What is the right method to enter to download mode using just buttons without open the back cover?
Click to expand...
Click to collapse
If your device is redirecting to TWRP, I suggest you to flash the stock recovery and see if appears any error message, like "nv data corrupted".

Before flashing custom rom, I suggest you to flash the V12.0.1.0.QJOIDXM (Indonesia), because some custom roms are based on this.

About preloader, I suggest you to keep on V12.0.4.0, because you can flash using spflashtool in download mode and you can avoid the EDL bypass. It is working on Android 11 too.

About scatter file, I suggest you to use the same scatter of the MIUI version you have.

As I said, if you want to skip EDL bypass and flash using download mode, just flash preloader-V12.0.4.0.bin.
 
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SubwayChamp

SubwayChamp

Senior Member
Aug 6, 2016
4,672
4
1,781
VD171 said:
If your device is redirecting to TWRP, I suggest you to flash the stock recovery and see if appears any error message, like "nv data corrupted".

Before flashing custom rom, I suggest you to flash the V12.0.1.0.QJOIDXM (Indonesia), because some custom roms are based on this.

About preloader, I suggest you to keep on V12.0.4.0, because you can flash using spflashtool in download mode and you can avoid the EDL bypass. It is working on Android 11 too.

About scatter file, I suggest you to use the same scatter of the MIUI version you have.

As I said, if you want to skip EDL bypass and flash using download mode, just flash preloader-V12.0.4.0.bin.
Click to expand...
Click to collapse
Thanks for the help, I flashed it and used it as base, now all the custom ROMs can pass at least the boot/splash, but they get stuck in the settings (it's strange though).

I feel that some ROM I flashed messed something with the product partition.

I guess I will flash the stock ROM you suggested to fixed it.
Regards.
 
VD171

VD171

Senior Member
Jun 21, 2012
2,961
2
2,209
127.0.0.1
LG K10
Samsung Galaxy J7
SubwayChamp said:
Thanks for the help, I flashed it and used it as base, now all the custom ROMs can pass at least the boot/splash, but they get stuck in the settings (it's strange though).

I feel that some ROM I flashed messed something with the product partition.

I guess I will flash the stock ROM you suggested to fixed it.
Regards.
Click to expand...
Click to collapse
Sometimes, you need to wipe data or your device can be stucked or in bootloop, like when you downgrade your system.
I really prefer stock ROM, I can do everything I want using magisk and xposed :)
 
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N

Niex

Member
Feb 26, 2016
12
0
how unlock boot to install eng rom ?
cant enable 4g data to unlock, both imei are null
 
VD171

VD171

Senior Member
Jun 21, 2012
2,961
2
2,209
127.0.0.1
LG K10
Samsung Galaxy J7
Niex said:
how unlock boot to install eng rom ?
cant enable 4g data to unlock, both imei are null
Click to expand...
Click to collapse
Read here:
forum.xda-developers.com

[GUIDES & FAQ][Merlin] Bootloader, Magisk, EdXposed, SafetyNet, GSI/Treble ROMs

DISCLAIMERS (please read !) This thread is made for the Redmi Note 9, also known as Redmi 10X 4G. This device's codename is Merlin. I will not be held responsible if you brick your device. Follow the instructions shown in this thread at your own...
forum.xda-developers.com forum.xda-developers.com
 
G

ginacomm

Member
Jun 10, 2022
7
0
Which scatter file should I choose?
Captura de pantalla 2022-06-14 191214.png
 
H

Hussein Gbr

Member
Dec 14, 2016
36
3
Communos said:
Engineering rom is base firmware used by the company to test features and build stock rom for the device.

It is not for daily use, just for unbricking device.
Click to expand...
Click to collapse
For unbricking device ? I have redmi k40 bootloader locked and open fastboot only so I can use that on edl mode ? It will will work if bootloader locked??
 
H

Hussein Gbr

Member
Dec 14, 2016
36
3
VD171 said:
Good job, my friend.
IMEI for Slot1 will not be accepted on release versions.
Just go back to engineering and erase the IMEI for slot1.
It needs to be empty.
Keeps only IMEI for slot2.
And then, it will works perfectly.
Only Xiaomi Centre can recover IMEI for slot1 if you lost it.
Click to expand...
Click to collapse
I have redmi k40 bootloader locked open only fastboot, eng rom will do any help for me ?? And how i will use it ???
 
SubwayChamp

SubwayChamp

Senior Member
Aug 6, 2016
4,672
4
1,781
Hussein Gbr said:
For unbricking device ? I have redmi k40 bootloader locked and open fastboot only so I can use that on edl mode ? It will will work if bootloader locked??
Click to expand...
Click to collapse
You can flash what you want in EDL mode, it doesn't matter whether your bootloader is locked or not. You should use a specific ENG firmware for your device, not the one from here, something like this https://androidfilehost.com/?fid=17825722713688258725, but the issue would be that you should need an authorized account in order to use MiFlash tool, anyway, you can try it.
 
H

Hussein Gbr

Member
Dec 14, 2016
36
3
SubwayChamp said:
You can flash what you want in EDL mode, it doesn't matter whether your bootloader is locked or not. You should use a specific ENG firmware for your device, not the one from here, something like this https://androidfilehost.com/?fid=17825722713688258725, but the issue would be that you should need an authorized account in order to use MiFlash tool, anyway, you can try it.
Click to expand...
Click to collapse
The authorization account is the main problem but i will try with eng. Rom.
 
H

Hussein Gbr

Member
Dec 14, 2016
36
3
SubwayChamp

SubwayChamp

Senior Member
Aug 6, 2016
4,672
4
1,781
Hussein Gbr said:
This link is for Ares k40 gaming edition I want alioth ??
Click to expand...
Click to collapse
I just showed that this kind of ROMs exist for many devices out there, for this I said "something like this…" not "this..." Search for a ROM that it is exactly for your exact device unless you find, that you know for certain, as it is known in Xiaomi devices, they make a "double" release that are launched for different regions, with the same specs.
 
H

Hussein Gbr

Member
Dec 14, 2016
36
3
SubwayChamp said:
I just showed that this kind of ROMs exist for many devices out there, for this I said "something like this…" not "this..." Search for a ROM that it is exactly for your exact device unless you find, that you know for certain, as it is known in Xiaomi devices, they make a "double" release that are launched for different regions, with the same specs.
Click to expand...
Click to collapse
Thanks for your help i will search for it.
 
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    VD171
    VD171
    Version 1

    IMG_20210202_233740_166-by_Communos--2.jpg

    Works with:
    - Xiaomi Redmi Note 9
    - Xiaomi Redmi 10X 4G

    Build Date:
    2020/05/13

    Android Version:
    QP1A.190711.020

    Display ID:
    AL2522-Merlin-V039-Q-0513

    Build Fingerprint:
    Redmi/merlin/merlin:10/QP1A.190711.020/258:userdebug/test-keys

    Security Patch:
    2019/12/05

    Radio/Modem/Baseband Version:
    MOLY.LR12A.R3.MP.V94.3

    Kernel Version:
    4.14.141-gf3c3c7a
    Wed May 13 12:49:46 CST 2020

    Download:
    https://www.mediafire.com/file/lon7...V039-Q-0513_QP1A.190711.020_by-VD171.zip/file

    Password:
    Pass is in the attached file: PASSWORD_by_VD171.txt

    How to flash it?
    Use any scatter file specific for MERLIN.

    Radio/Modem/Baseband properties:
    Code: 
    md1_dbginfodsp=DbgInfo_DSP_MT6768_MOLY_LR12A_R3_MP_V94_3_2019_12_31_16_23.xz
md1_dbginfo=DbgInfo_LR12A.R3.MP_HUAQIN_Q0MP1_MT6769_SP_MOLY_LR12A_R3_MP_V94_3_2020_03_26_19_19.xz
md1_mddbmeta=MDDB.META_MT6768_S00_MOLY_LR12A_R3_MP_V94_3.EDB
md1_mddbmetaodb=MDDB.META.ODB_MT6768_S00_MOLY_LR12A_R3_MP_V94_3.XML.GZ
md1_mddb=MDDB_InfoCustomAppSrcP_MT6768_S00_MOLY_LR12A_R3_MP_V94_3.EDB

    Prop.default:
    Code: 
    ro.build.version.incremental=258
ro.odm.build.version.incremental=258
ro.vendor.build.version.incremental=258
ro.build.version.security_patch=2019-12-05
ro.vendor.build.security_patch=2019-12-05
ro.build.display.id=AL2522-Merlin-V039-Q-0513
ro.vendor.mediatek.version.release=alps-mp-q0.mp1.tc8sp2-V1.4_huaqin.q0mp1.k69v1.64_P1
ro.build.product=merlin
ro.product.board=merlin
ro.product.odm.device=merlin
ro.product.odm.model=merlin
ro.product.odm.name=merlin
ro.product.product.device=merlin
ro.product.product.model=merlin
ro.product.product.name=merlin
ro.product.system.device=merlin
ro.product.system.model=merlin
ro.product.system.name=merlin
ro.product.vendor.device=merlin
ro.product.vendor.model=merlin
ro.product.vendor.name=merlin
ro.build.flavor=merlin-userdebug
ro.build.description=merlin-userdebug 10 QP1A.190711.020 258 test-keys
ro.board.platform=mt6768
ro.build.id=QP1A.190711.020
ro.odm.build.id=QP1A.190711.020
ro.product.build.id=QP1A.190711.020
ro.system.build.id=QP1A.190711.020
ro.vendor.build.id=QP1A.190711.020
ro.bootimage.build.fingerprint=Redmi/merlin/merlin:10/QP1A.190711.020/258:userdebug/test-keys
ro.odm.build.fingerprint=Redmi/merlin/merlin:10/QP1A.190711.020/258:userdebug/test-keys
ro.product.build.fingerprint=Redmi/merlin/merlin:10/QP1A.190711.020/258:userdebug/test-keys
ro.system.build.fingerprint=Redmi/merlin/merlin:10/QP1A.190711.020/258:userdebug/test-keys
ro.vendor.build.fingerprint=Redmi/merlin/merlin:10/QP1A.190711.020/258:userdebug/test-keys
ro.build.tags=test-keys
ro.odm.build.tags=test-keys
ro.system.build.tags=test-keys
ro.vendor.build.tags=test-keys
ro.build.type=userdebug
ro.odm.build.type=userdebug
ro.system.build.type=userdebug
ro.vendor.build.type=userdebug
ro.bootimage.build.date=Wed May 13 12:41:51 CST 2020
ro.build.date=Wed May 13 12:41:51 CST 2020
ro.odm.build.date=Wed May 13 12:41:51 CST 2020
ro.product.build.date=Wed May 13 12:41:51 CST 2020
ro.system.build.date=Wed May 13 12:41:51 CST 2020
ro.vendor.build.date=Wed May 13 12:41:51 CST 2020

    MD5 hashes:
    Code: 
    APDB_MT6768_S01__W1953 -> 3adfe0c4e41828cd51ed783da774bd08
boot-debug.img -> e9dfb7dde67795157a871bc14b490054
boot.img -> d6e19a30d85a27379d91072665ad43c9
cache.img -> c40c137a18a26980d406d4ef0ccd7e61
cust.img -> e8c4e9f4ee0fe5052cf0dc356aedd8de
DbgInfo_LR12A.R3.MP_HUAQIN_Q0MP1_MT6769_SP_MOLY_LR12A_R3_MP_V94_3_2020_03_26_19_19_1_ulwctg_n -> b5bf654ddaacfd61e78c131f721974af
dtb.img -> ec4b37b164f1bd9ce6f2b1b911ac0872
dtbo-verified.img -> 9b0fa19089a0310325b88eebc8e41ae7
dtbo.img -> 9b0fa19089a0310325b88eebc8e41ae7
efuse.img -> 421f2cead0fbea555680b96136555941
exaid.img -> e8c4e9f4ee0fe5052cf0dc356aedd8de
lk-verified.img -> 0ba475d8c216b2613815b59e3db8da2b
lk.img -> 0ba475d8c216b2613815b59e3db8da2b
logo.bin -> 257508aa9cdeb690e4a4ed038c91ff76
md1arm7.img -> a0453e723dc84255940d7791740d06db
md1img-verified.img -> 27cd78644df092ade4ca03799dc3c2a3
md1img.img -> 27cd78644df092ade4ca03799dc3c2a3
md3img.img -> 9a9c185e3f6234103e5949716b9962d2
MDDB.META.ODB_MT6768_S00_MOLY_LR12A_R3_MP_V94_3_1_ulwctg_n.XML.GZ -> 4e040508c1878706a428c54ef0844e0f
MDDB.META_MT6768_S00_MOLY_LR12A_R3_MP_V94_3_1_ulwctg_n.EDB -> 7c1ecfd4e3d626957b6655f107824649
MDDB_InfoCustomAppSrcP_MT6768_S00_MOLY_LR12A_R3_MP_V94_3_1_ulwctg_n.EDB -> b24757bd125ad435bd2d26575b5c1d75
MT6768_Android_scatter.txt -> 0a8f16b2276ee9c37337a3937f71a7c8
preloader.img -> dbc21da31860042674fab69d07444e95
preloader_emmc.img -> dbc21da31860042674fab69d07444e95
preloader_merlin.bin -> bc7ebc0c2ca06b0d99856d595949e215
preloader_ufs.img -> 29ef0e631a45bf14555fd6b7adb7a7bf
product.img -> 7ec4f1ffd2b49d7c5b4f1bb5d3ba0dc6
ramdisk-debug.img -> b6048055b240d3c9f6933544b86416b5
ramdisk-recovery.img -> 77de275ef543e46bbedfd53b7e36f945
ramdisk.img -> 545ec84cf25662d1e4f4cf7e496fa56e
recovery.img -> 6362f1beb617572680f3fc91640d3767
scp-verified.img -> 2cac6177dc7eec82421cb3f4a2776aff
scp.img -> 2cac6177dc7eec82421cb3f4a2776aff
secro.img -> 096587b863e1252d67b1b8307291db09
spmfw-verified.img -> 40345cc1edec88bcd510fa62eac01739
spmfw.img -> 40345cc1edec88bcd510fa62eac01739
sspm-verified.img -> 0ceaf392e89bf70c9a52a5c91cc75865
sspm.img -> 0ceaf392e89bf70c9a52a5c91cc75865
super.img -> 542873466ecc6603c81758cf6a000390
super_empty.img -> a6d56d7a12d989bf31511d866449291d
system.img -> 27976b65c09bd01e7963a5f3db563fc7
tee-verified.img -> 4f2fdf78d5be3a5de0154c46af69d476
tee.img -> 4f2fdf78d5be3a5de0154c46af69d476
userdata.img -> 802561cd4739f2f0aae7a51890a5866f
vbmeta.img -> 31da88d4a00b99b36081f859f17f808a
vbmeta_system.img -> a6b560b53a42c98fba204f2b69e70fd7
vbmeta_vendor.img -> 86fae46d211bdedcb49bd08e901d4d3f
vendor.img -> 1a15f790bf6c32fb959da9bc4dfce6e4



    :unsure: Do you need help with your MERLIN device ?
    Read this FAQ: https://forum.xda-developers.com/t/...for-merlin-redmi-note-9-redmi-10x-4g.4225163/
    View
    2
    VD171
    VD171
    renorednose said:
    I installed pixelplusui on miui 12.0.1 android 11 and I lost both imei, I made a backup of nvram and nvdata but when restoring them my imei is not repaired, this method can work for me?
    Click to expand...
    Click to collapse
    If you want to use pixelplusui, you can write both imei by yourself.
    If you want to use stock MIUI, just restore original nvram and erase nvdata.
    View
    2
    VD171
    VD171
    p233 said:
    Thanks pro,
    In Engineer mode, I can repair IMEI, and fix null NVRAM. Then, I readback nvram, nvdata... by SPFT. Then, I flash ROM Stock, and backup nvram,nvdata... But my devices is brick. Now, i return to ROM Engineer.
    Click to expand...
    Click to collapse
    Good job, my friend.
    IMEI for Slot1 will not be accepted on release versions.
    Just go back to engineering and erase the IMEI for slot1.
    It needs to be empty.
    Keeps only IMEI for slot2.
    And then, it will works perfectly.
    Only Xiaomi Centre can recover IMEI for slot1 if you lost it.
    View
    2
    VD171
    VD171
    p233 said:
    How enable meta mode and use maui meta in ROM 12.0.4 China (Redmi 10x 4G)? Thanks pro.
    Click to expand...
    Click to collapse
    Just install USB drivers, open maui meta, click connect and plug powered off phone.
    View
    2
    VD171
    VD171
    p233 said:
    Hello mod, if i flash this Rom, i may repair imei null for my device?
    Click to expand...
    Click to collapse
    I'm not a mod.
    Engineering Firmware does NOT repair your imei.
    It just allow you to enter in meta mode and use maui meta.
    You need to do everything by yourself.
    Talking about changing imei is not allowed on XDA, please don't ask about how to do that.
    Good luck
    View

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