Guide to Flash Official Stock ROM Android Lenovo A3690 Using SP Flash Tool.

Flash Stock Firmware Lenovo A3690. this guide will show you how  to Flash Stock ROM or Firmware Android Lenovo A3690 Using SP Flash Tool. You can follow this guide if you have downloaded and installed any custom ROM on your Lenovo A3690, And you want to revert back to the original version Android operating system which came out of the box. Please be ware, that rooting and flashing custom ROMs results breaking the warranty of Lenovo A3690 device. We is not responsible for any phone damage which is incurred during Custom ROMs flashing process.

Lenovo A3690 is device released on 2015, October. comes with Android OS, v5.1 (Lollipop) and suppoerted with Mediatek MT6735P chipset, Quad-core 1.0 GHz Cortex-A53 CPU, GPU   Mali-T720MP2, combined with 2 GB of RAM and 8 MP of Main camera and 2 MP on secondary camera.

Prepare this before flash Lenovo A3690.

1. Make sure you have backup all data and file stored on Internal memory Lenovo A3690
2. Make sure you have at least 80% of battery capacity
3. Root your Lenovo A3690 devices, see this guide to root it.
4. Download SP Flash Tool 5.1532. Here
5. Download Lenovo A3690 Stock Firmware. Here 
• To download this file you must be a registered user at needrom.
• This file include, Lenovo A3690 full ROM (GAPPS+working stockRecovery inc luded)
6. Make sure you have enable USB Debugging on your Android Lenovo A3690 device.
• Go to Settings ->Developer Options -> USB Debugging.
• If Developer Options is not appear under settings menu. You can enable it by going to :
• Settings > About Phone > Device Info and tap on Build Number for about 7-8 times. And then go back and follow previous step.

ROM Description.

1. ROM Version            : A3690_s019
2. Android Version        : 5.1
3. Date                          : 01/13/2016 1:32 am
4. ROM Author/credits  : Lenovo Forums
5. Feature : All Stock Features
6. Password       & nbsp;            zizina_pisica_maimutica

Guide to Install Stock ROM on Lenovo A3690.

1. You must download SP Flash Tools and the custom ROM from download link above.
2. Then, extract SP Flash tool and TWRP recovery on the specific folder on your computer, we recommended you exract it on desktop.
3. Then remove your Sim card and SD Card  if installed.
4. Next, Connect your Lenovo A3690 to Computer, while holding the power button and volume up. The PC will detect the new hardware, just ignore it. 
5. Open SP flash tool software and click scatter load. find Lenovo A3690 scatter storage location earlier. (on desktop).

   MT6752 scatter

6. In the Scatter Loading field go to the folder where you extracted the Flash Tool and select target_bin

   

   Flash / Install Firmware Lenovo A3690.

7. Then you click options ->Download -> then check DA DL all with checksum.

   

   Flash / Install Firmware Lenovo A3690.

8. On download tab, ensure you have selected download only option from dropdown menu, see below picture.

   

   Flash / Install Firmware Lenovo A3690.

9. Then, click download button on top right and connect your Lenovo A3690 with USB cable in phone switch off position.
   
   

   

   Fla sh / Install Firmware Lenovo A3690.

10. Process will run automatic, and you can see the red stripe showing download percentage at bellow
11. When your process complete, you can see a green circle with tick mark. 

    

    Flash / Install Firmware Lenovo A3690.

12. Now disconnect your Lenovo A3690
13. Then, start your Lenovo A3690. (remember, on the first booting it will take a long time to start)
14. Success. enjoy.