If you notice any software malfunctions with your Vivo Y35A android device, you're most likely required to download and flash stock ROM firmware on your Y35A to permanently correct the software errors you noticed on your Vivo Y35A. And when you load stock firmware on your Vivo Y35A using any Qualcomm flash tool, your Vivo Y35A will be reset to factory defaults settings and by that, definately, your UserData will be lost including contacts, messages and others.
If your device has been bricked and want to unbrick it, you will need to pay closer attention to the tutorials contained below here.
Vivo Y35A Stock ROM Firmware Download Link(s)
1. Vivo Y35A_319899_PD1502A_A_1.7.5_FEVER_EDITION (Android 5.0.2)
How to Flash Stock Firmware On Vivo Y35A
1. Download your Vivo Y35A stock ROM firmware from the link above.
2. Extract the Vivo Y35A Firmware you downloaded from the link above onto a folder on your PC.
3. Download and install Qualcomm android device drivers on your PC. You may skip this step if you have installed Qualcomm drivers on your PC already otherwise, download Qualcomm drivers here
4. Now, choose either of the tools listed below here to load the stock firmware on your Vivo Y35A.
Note
1. Each of the tools listed above contained step by step guides with illustrated pictures on how to flash stock firmware on your Vivo Y35A.
2. If your device is bricked already, I recommend that you use Tool Studio eMMC Download Tool or QPST QFIL.
3. If you require any further assistance, simply drop your comment detailing the issue(s) and I shall help you revive your Vivo Y35A, if need be.