AC8227L – Mediatek components + unknown MCU – Bricked device need help from PCB pictures

Hi all,
I'm hoping someone can help regarding a motherboard from a radio unit from here:https://www.ebay.co.uk/itm/Single-One-DIN-7-inch-HD-Car-Media-Player-GPS-SAT-NAV-Bluetooth-Stereo-Radio-4K/263200212252?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m2749.l2649 , and I do appreciate your time..

I am hoping, anyone could help identify the Serial/UART pins on the board.

I've really been digging into this and researching on Russian websites and getting lot's of interesting information including from XDA forums thankfully, but not this issue. I have included some pretty much hi res images, some are dark but I have redone some, everything is readable but I've googled and googled for model/part/serial numbers etc and have had no results that helped to identify where I could potentially find the UART connection.

If anyone has the same unit or similar it would be great to share the knowledge and help others debrick this device if there are any!
Many thanks, for anyone who cares take a look!

https://imgur.com/a/8Qz8ESP - all high res images

Hi Chris-  I can't tell where the UART pins are, but I'm wondering- how did it get bricked?  Are you confident that a firmware reload will fix it?
-Rick 

Hi there Rick,
Thanks for looking at this - I bricked it(foolishly) using software called SP Flash tool, where I was following some instructions on the program that said to select the "Auto format" option to allow continuing a process which I cannot remember... and I selected that to which I realize it has probably removed the bootloader and everything else.
I'd say i'm "kind of" confident that should fix it if I got this kind of access, although I'm still trying to get the USB devices recognized again as that would help.
I hoping at least to flash something to get it going again, it powers up, screen lights up(just black).
I've been reading up on test points, and have just recently found a couple by the MCU(i think), I've read somewhere that these could trigger some sort of boot mode...

Anyway, apart from the above, it's been a good learning experience and has triggered my interest in electronics again!

Hi Chris-Glad you've got a good attitude about this.Please take another round of pictures, with a closer view of any connector that (1) doesn't have anything plugged into it, (2) is 10 pins or less, and (3) is not a ribbon cable connector.Also, if you see any rows of pads with no connector installed, 10 pins or less, get pictures of those too.I'd say chances of un-bricking it are not good, but like you said- let's learn something along the way!-Rick