Umidigi A3 Pro - TWRP & Stock Rom

[Cleopatra Bianchi]

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 :

 

[kd7eir]

I think I bricked my A3 non Pro. I firmware upgraded the light rom with sp flash toot and it said ok.
Now screen stays black volume up + power doesn't work.

Most likely you can recover from this.

Post #6 clearly states "I use umidigi A3. Will it work for me Absolutely not. This thread is reserved exclusively to the Umidigi A3 Pro"

So, why would you flash it to your NON PRO?

The good news is that you can get a stock NON PRO Rom and probably flash that and get your phone back.

https://community.umidigi.com/forum.php?mod=viewthread&tid=17572

 

[Cleopatra Bianchi]

answer

I think I bricked my A3 non Pro. I firmware upgraded the light rom with sp flash toot and it said ok.
Now screen stays black volume up + power doesn't work.

I shall never tire of repeating : This thread is reserved exclusively to the Umidigi A3 Pro !

I suggest you to download the stock firmware (for Umidigi A3) from the Umidigi official site.
Then, to flash it by SP Flash Tool (use "Firmware Upgrade" option onto SP Flash Tool.

 

[BlackX777]

I shall never tire of repeating : This thread is reserved exclusively to the Umidigi A3 Pro !

I suggest you to download the stock firmware (for Umidigi A3) from the Umidigi official site.
Then, to flash it by SP Flash Tool (use "Firmware Upgrade" option onto SP Flash Tool.

Flashed the the newest stock firmware all ok again thx
there is also a root guide thats all i wanted :cyclops:

 

[max270]

Need help! By tragic accident my NVRAM has been damaged and the backup has been damaged too.Now my A3 Pro can't see cellular network. By *#06# it shows nothing . Extremely need donor's NVRAM .

 

[Cleopatra Bianchi]

answer

Need help! By tragic accident my NVRAM has been damaged and the backup has been damaged too.Now my A3 Pro can't see cellular network. By *#06# it shows nothing . Extremely need donor's NVRAM .

STEPS :

1) Onto dial menù type the next sequence : *#*#3646633#*#*
2) Onto Telephony tab scroll down until GPRS
3) Tap on GPRS
4) Write your two IMEIs onto SIM1 & SIM2
5) Reboot the phone

 

[max270]

Oh I already did it. The answer is "fail to write imei due to radio unavailable or something else"
I still need NVRAM

 

[Cleopatra Bianchi]

answer

Oh I already did it. The answer is "fail to write imei due to radio unavailable or something else"
I still need NVRAM

Try the next solution - ROOT REQUIRED

STEPS :

1) Download/install "Terminal emulator for Android" by Jack Palevich.
2) Tap on "Terminal emulator for Android" apk.
3) Type su (and tap Enter).
4) Type the next command :

echo 'AT +EGMR=1,7, "IMEI_1" ' >/dev/radio/pttycmd1 (and tap Enter)

NOTE : replace IMEI_1 with your first IMEI

5) Type the next command :

echo 'AT +EGMR=1,10, "IMEI_2" ' >/dev/radio/pttycmd1 (and tap Enter)

NOTE : replace IMEI_2 with your second IMEI

6) Reboot the phone.

 

[max270]

Done but still nothing.After it trying add IMEI again through GPRS and still "fail to write imei due to radio unavailable or something else".

Please guys.Give me NVRAM.

Just replaced NVRAM (have backup) through TWRP to another NVRAM from A3 phone. MAC has been changed.
Bluetooth don't changed. IMEI still not shows.

Tried change IMEI via terminal.Device rooted.But answer was Permission denied.

 

[Cleopatra Bianchi]

answer

Done but still nothing.After it trying add IMEI again through GPRS and still "fail to write imei due to radio unavailable or something else".

Please guys.Give me NVRAM.

Just replaced NVRAM (have backup) through TWRP to another NVRAM from A3 phone. MAC has been changed.
Bluetooth don't changed. IMEI still not shows.

Tried change IMEI via terminal.Device rooted.But answer was Permission denied.

Try "Cryptotel Chamelephon" apk - ROOT REQUIRED

Little info : this apk has been removed from the store.

http://www.mediafire.com/file/roiukdxq5zl9tuz/Cry_IMEI.zip/file

IMPORTANT : After changing the IMEIs, reboot the phone.

 

[max270]

Try "Cryptotel Chamelephon" apk - ROOT REQUIRED

Little info : this apk has been removed from the store.

http://www.mediafire.com/file/roiukdxq5zl9tuz/Cry_IMEI.zip/file

IMPORTANT : After changing the IMEIs, reboot the phone.

Try "Cryptotel Chamelephon" apk - ROOT REQUIRED

Did it yesterday and today.Now trying rewrite IMEI by SN_Writer tools.I think best way re-place NVRAM via flash tools..
I don't know maybe it important-when phone just rebooted and loaded android I see inscription Simprocessor.After a couple sec it disappear.

---------- Post added at 12:33 PM ---------- Previous post was at 11:55 AM ----------

Hooray! I did it. I replaced NVRAM and NVDATA.Both partitions has been backup via TWRP from A3 Android treble_arm64_agN-userdebug_9_PQ1A190105004. After replace the partitions IMEI has been changed and I return it back via termianl. My IMEI now not changed back after reboot. For first look all works correct.

 

[trkcnky]

thanks :good::good: but is there any chance to get gcam for a3 pro?

 

[s80_gad]

Few more questions

Greetings to everyone and especially to Cleopatra Bianchi for providing us with that great tutorial!

I hope Cleopatra Bianchi won't mind couple of additional questions.

1. First of all, I have just received my A3 Pro (haven't started it yet) and I want to make a proper full backup of the phone with SP Flash Tool. Can you advise me what version of SP Flash Tool to use and what is the best way to do it (I'll appreciate a guide with couple of images in it, if possible)?
I have used SP Flash Tool before but just don't want to mess up the device as it might be different.

2. I very much like the idea of the Umidigi A3 Pro V1.2 LIGHT version (Thanks for that as well Cleopatra Bianchi )
May I ask if you can point what has been removed or at least the main difference?

3. You are saying that we can flash directly the Light version? Can you advise which steps we have to follow first from the original post in order to root the phone first?

Thanks a lot for all the replies. I appreciate all that has been posted in the thread and XDA so far!
Regards

Again, I am sorry if the questions are too much - I have done it previously but I am not familiar with that specific phone so just want to get it right, I hope you'll understand

 

[Cleopatra Bianchi]

answer

thanks :good::good: but is there any chance to get gcam for a3 pro?

After numerous failed attempts (with original and modded versions of gcam),
I was able to find three different gcam versions that work well onto A3 pro.

I have placed the three gcam apps inside the following rar :
https://mega.nz/#!ap9SSQZB!Qrtx1uuoXsAAwmFKunmKPv42lMJS2bgwmY5SvUn2acA

I have tested all three apps onto Umidigi A3 Pro V1.2 LIGHT version.
Feel free to install the one that you want.
In my view, the gcam 3.2 apk could be the best.

The phone does not require the "Camera2API enabler" or "persist.camera.HAL3.enabled=1".

 

[Cleopatra Bianchi]

warning

WARNING !

Pay attention to the following screenshots :

If any of you own a phone with the same characteristics :

- DO NOT flash the stock roms of this thread !

- DO NOT flash the TWRP of this thread !

- DO NOT flash the V1.2 LIGHT version !

 

[kozmo2k4]

WARNING !

Pay attention to the following screenshots :



If any of you own a phone with the same characteristics :

- DO NOT flash the stock roms of this thread !

- DO NOT flash the TWRP of this thread !

- DO NOT flash the V1.2 LIGHT version !

@Cleopatra Bianchi : Would you care to point out the differences between the phones, please?
Thank you.

 

[Cleopatra Bianchi]

answer

@Cleopatra Bianchi : Would you care to point out the differences between the phones, please?
Thank you.

I do not own that phone (A3_Pro_N_V1.1_20190103).
Then, I can not run any test on it.

I can deduct the differences between the "old A3 Pro" and the "new A3 Pro" from the screenshots.
The largest difference is the size of the ROM : 16GB (instead in the "old A3 Pro" the ROM is 32GB).
But I am pretty certain that there are other differences.

The story :
Yesterday an owner of the "new A3 Pro" contacted me.
He told me that his phone has a 2019 firmware.
That is what made me suspicious.
It is because there is no 2019 stock rom onto Umidigi official website.
I checked the OTA update, but there was no 2019 update.
He sent me two screenshots of his phone (you can see them).
I have noticed the differences (ROM size and the letter "N").
I recommended him to do not make any modifications onto his A3_Pro_N_V1.1_20190103.

After publishing my post (warning-post) on XDA,
a Russian guy tried to flash my Light rom onto his A3_Pro_N_V1.1_20190103.
He bricked his phone (you can see it on 4pda - post number 220).
It is the proof that my suspects were justified.

 

[kozmo2k4]

Thank you for explaining the difference between the two phones.

 

[Oleg Petrovich]

"N" firmware

We, on 4PDA posted the firmware from the "N" from UMIDIGI A3, can compare.
I can't insert a link to the message with the firmware. On 4pda.ru the topic of firmware Umidigi A3. In the cap threads there is a link.
There, a few posts below I have described the differences between the firmwares.

 

[Cleopatra Bianchi]

answer

We, on 4PDA posted the firmware from the "N" from UMIDIGI A3, can compare.
I can't insert a link to the message with the firmware. On 4pda.ru the topic of firmware Umidigi A3. In the cap threads there is a link.
There, a few posts below I have described the differences between the firmwares.

Dear Oleg Petrovich,

I appreciate your post.

But you are talking about the "N" firmware (UMIDIGI_A3_N_V1.0_20181222) for Umidigi A3.

Instead, I am talking about the "N" firmware (UMIDIGI_A3_Pro_N_V1.1_20190103) for Umidigi A3 Pro.

Please be careful to do not confuse the two different phones.
Someone already tried to flash an A3 Pro firmware onto an A3 phone.
The result has been a bricked phone.

Yesterday I have written to Umidigi forum to ask them the UMIDIGI_A3_Pro_N_V1.1_20190103 firmware.

 

[Slwtch]

...Please be careful to do not confuse the two different phones....

Official firmware from A3 Pro is perfectly installed on A3. But then the essence of the debate is that on phones the new revision (with the letter "N") you can't put the firmware of phones an old version. But on the contrary can be installed.