Cannot update to Nougat

[Hasibuzzaman Tonmoy]

Forum is marking my post as spam. So, I wrote everything in Pastebin.
https://pastebin.com/SpXrVdQB

 

[B. Diddy]

Sorry about the spam thing -- it's been a persistent issue on this forum for a couple of months now. Go to the Site Feedback forum and post there about it -- the more people who mention it, the more likely something might get done!

I copied your post from Pastebin, for convenience:

"I had Nougat (L19C636B360) when I bought my phone. The box had model "AL10" written on it although the firmware was of "L19". Anyways, an OTA update arrived, I clicked on update and the phone got bricked. I had never unlocked the bootloader, rooted or anything. After a lot of trial and error, I successfully got my phone working by flashing MM 6.0 - FRD-L19C900B131 through 'dload' method. But this firmware is buggy as hell. My phone's laggy, crashes constantly, the photos are worse etc.
I found a couple of stock firmware packages(L19C636B360) on XDA but they come with two separate files(update.zip and updata_data_full_hw_specxx.zip) and my phone doesn't support them(Installation fail). Also they are of only 1.5-2GB, whereas the one I successfully flashed is 3.3GB

Note:
I have unlocked the bootloader now.
I live in Bangladesh(Asia)"

 

[dpham00]

Have you tried to upgrade via the firmware finder app from the Google Play Store? Make sure you read the directions and disclaimers if you do use it