Umidigi A3 Pro - TWRP & Stock Rom

Cleopatra Bianchi

Senior Member
Mar 9, 2016
194
342
83
Milan


Reserved exclusively for the stock rom V1.0_20181122

Download the stock rom V1.0_20181122 at the following link :

https://mega.nz/#!yxkUVA4I!0exovcsKTXb75YIBZfrqDC6Ak01wsv_Bp3Nl5mGQ7o8

Download the TWRP at the following link :

https://mega.nz/#!G510QIbL!sbPzFXUi1Nw5mPFZZOsejeES7-togQxg9mrUNjAeWrA

Download "Disable_Dm-Verity_ForceEncrypt_12.16.2018.zip" at the following link :

https://mega.nz/#!a092gK4A!SYjKF4EUujCmCfkDG5LJL1vJygij0Ure4bFhxVuCjX0

Download "Bu_&_Ma.rar" (Busybox & Magisk) at the following link :

https://mega.nz/#!C9lUjCqT!fBoh8p1Jg7pwbVRg8KQWKKs-eXH1eHq67_IKb1IUyyw

Please follow very carefully all the next steps :

1) Copy "Disable_Dm-Verity_ForceEncrypt_12.16.2018.zip" onto your microSD.
2) Unrar "Bu_&_Ma.rar" and copy Busybox zip & Magisk zip onto your microSD.
3) Flash the stock rom V1.0_20181122 through SP Flash Tool.

I strongly recommend the "Firmware Upgrade" option (on SP Flash Tool).

4) Tap on Settings --> System --> About phone
5) Tap seven times on Build number
6) Then, tap on Developer options.
7) Enable OEM unlocking & USB debugging.
8) Unrar the TWRP rar.
9) Run SP Flash Tool.
10) Load the scatter file inside the twrp folder.
11) Select Download Only option.
12) Click Download.
13) Connect your turned off phone to the pc with USB cable.
14) When at 100% please disconnect the USB cable.
15) Enter onto twrp recovery (volume up + power buttons simultaneously).

FUNDAMENTAL STEP

16) Select the first white line with volume up.
17) Press volume down to confirm.
18) Select language
19) "enter password" tap on cancel
20) Tap on WIPE
21) Tap on FORMAT DATA (type yes).

Consideration :

FORMAT DATA will wipe your internal storage.
I suggest you to make a backup before to format Data.

22) Return to the twrp home screen.

VITAL STEP

23) Tap on Reboot and choose Recovery.
DO NOT reboot your device onto System !
Tap on Do Not Install.
24) Tap Install, Select Storage, Micro SDCard, OK.
25) Tap on "Disable_Dm-Verity_ForceEncrypt_12.16.2018.zip".
26) Swipe to confirm Flash.

Consideration about "Disable_Dm-Verity_ForceEncrypt_12.16.2018.zip" :

Many thanks to @Zackptg5 for this zip.
This zip disable Dm-Verity, Forced Encryption, and Disc Quota Disabler.
Like Zackptg5 says :
"This zip should be flashed after anything that modifies your boot img (like a custom kernel) but before magisk/supersu since this zip creates the files that tells magisk/supersu to not encrypt".

27) Tap on Magisk.zip
28) Tap on Busybox.zip
29) Swipe to confirm Flash.
30) Tap on Reboot (into System) and tap on Do Not Install.
31) Be patient.
32) Set up as new.
33) Tap on Settings --> System --> About phone
34) Tap seven times on Build number
35) Then, tap on Developer options.
36) Enable OEM unlocking & USB debugging.

EXTREMELY VITAL :

37) Tap on Magisk Manager.
38) Upgrade to full Magisk Manager.

NOW you can see NOT ROOTED phone :



39) Reboot the phone.

NOW you can see ROOTED phone :



:)
 

Cleopatra Bianchi

Senior Member
Mar 9, 2016
194
342
83
Milan

Cleopatra Bianchi

Senior Member
Mar 9, 2016
194
342
83
Milan
UPDATE

UPDATE - NEW STOCK ROM & NEW TWRP




GUIDELINES FOR THE INSTALLATION OF THE OTA ZIP

Please follow carefully all the next steps in order to install properly the OTA zip :

1) Flash the stock rom V1.1_20181211 (Firmware Upgrade option on SP Flash Tool).
2) Set up as new.
3) Download the OTA zip (V1.2_20181221_update .rar) at the next link :

https://mega.nz/#!bpsxxCCb!k-G1ndw1iygOsr1VQ_IM1xhEcm-mMJAxoxHMTSqZk-s

4) Unrar the V1.2_20181221_update.rar
5) DO NOT unzip the update.zip
6) Copy the entire folder "V1.2_20181221_update" onto your microSD.
7) Turn off your phone.
8) Hit simultaneously volume up + power buttons.
9) Hit the volume up button to select Recovery mode.
10) Dead Android and red triangle error - NO PANIC
11) Hit simultaneously volume up + power buttons several times.
12) Hit the volume up or volume down buttons to move between the options.
13) Hit the power button to select any option.
14) Select Apply update from SD card.
15) Select the folder "V1.2_20181221_update" onto your microSD.
16) Select the update.zip
17) Hit power button to start the installation process.



18) Select Wipe data/factory reset --> Select Yes.
19) Select Wipe cache partition --> Select Yes.
20) Select Reboot system now.
21) Set up as new.



22) Tap on Settings --> System --> About phone
23) Tap seven times on Build number
24) Then, tap on Developer options.
25) Enable OEM unlocking & USB debugging.

TWRP :



A3_P-NEW-twrp_03.rar (ROOT STEPS AT FIRST POST)

The twrp is available on Needrom

;)
 

Cleopatra Bianchi

Senior Member
Mar 9, 2016
194
342
83
Milan
A3 Pro V1.2 LIGHT

Umidigi A3 Pro V1.2 LIGHT version

It is a debloated version of the original stock rom V1.2_20181221.

Added TWRP 3.2.3 and Simple Gallery.apk

In the original stock V1.2_20181221 the free space onto System is 155 MB
Instead, in the A3 Pro V1.2 LIGHT the free space onto System is 625 MB



Download the A3_Pro_V1.2-LITE.rar at the following link :

https://mega.nz/#!jsVTUCCQ!qg4WabDN5U2QKHaSDFWjYZNBrMFv2mSKoVQ6dszEMUA

Please follow very carefully all the next steps :

1) Flash the A3 Pro V1.2 LIGHT through SP Flash Tool.

I strongly recommend the "Firmware Upgrade" option (on SP Flash Tool).

2) Turn on your phone.
3) When the setup wizard will appear, turn off your phone.
4) Enter onto twrp recovery (volume up + power buttons simultaneously).
5) Select the first white line with volume up.
6) Press volume down to confirm.
7) Select language
8) "enter password" tap on cancel
9) Tap on WIPE
10) Tap on FORMAT DATA (type yes)
11) Return to the twrp main screen.
12) Tap on Reboot and choose System.
13) Complete all the requirements of the setup wizard.
14) Tap on Settings --> System --> About phone
15) Tap seven times on Build number
16) Then, tap on Developer options.
17) Enable OEM unlocking & USB debugging.
18) Tap on Magisk icon.
19) Upgrade to full Magisk Manager.
20) VITAL : Reboot the phone (it is needed for the fully functioning of Magisk).
21) Tap on the Play Store to update the apk.

In the Play Store, the first time that you update (apk), it takes a little time.



DO NOT update the A3 Pro V1.2 LIGHT to a newer version (no OTA)
 

shifi_11

Member
Jul 3, 2018
11
3
0
Android pie custom rom

Great work in bringing twrp to our devices. It will be so much nicer if lineage 16 os or any other treble gsi custom rom running android 9 would work without ussd or sms issues on mtk devices like the a3 and a3 pro
 

Cleopatra Bianchi

Senior Member
Mar 9, 2016
194
342
83
Milan
answer

Great work in bringing twrp to our devices. It will be so much nicer if lineage 16 os or any other treble gsi custom rom running android 9 would work without ussd or sms issues on mtk devices like the a3 and a3 pro
Also my A3 Pro V1.2 LIGHT version looks pretty sweet.

Regarding the Project Treble, I am already working on it.
But I cannot confirm anything at this point.
Please be patient (and fingers crossed).
 

kozmo2k4

Senior Member
Nov 4, 2010
428
139
73
Nature Coast
Thank you @Cleopatra Bianchi for working on this phone.
Very much appreciated.
Got the A3 Pro yesterday, connected WiFi, let it OTA update to V1.2_20181221.
Turned off, followed to OP directions to install TWRP and got it rooted with Magisk.
Works like a champ.
This is a really nice phone for the price ($99 on Amazon, minus some gift cards). We will see how it holds up in everyday use.
 
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KimLe

Senior Member
May 12, 2011
260
61
48
Bought Umidigi A3 Pro on Amazon for $95 free shipping.
Installing straight to the light rom then Magisk.
All work out, has no problems at all.
Thanks Cleopatra Bianchi...

Today 1/17/2019
***It is reduced price on Amazon $89.99 -%5 ( clip the coupon) = 85.50$ free shipping***
 
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BlackX777

Senior Member
Aug 17, 2011
56
11
38
I think I bricked my A3 non Pro. I firmware upgraded the light rom with sp flash tool and it said ok.
Now screen stays black volume up + power doesn't work.
 
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