[Redmi 9A Guides, News, & Discussion] Ivan.Adriazola:
Disclaimer.

To test how bricked your phone is, you should open device admin, turn on show hidden devices, and check wether it gets updated on there when you plug your "bricked phone", even if it shows up as unrecognizable, its something, if anything changes at all when you plug, or unplug, your device is kinda ok, you just need to do the right things to repair it the issue comes when nothing shows up on here

I bricked my phone again XD, Im a pro at this point.

This time I tried installing Kenvyra but I had to flash Stock rom first and I thought it too annoying so I decide to just flash it over lineage os.

The phone was left totally unresponsive, the phone was not detected by the computer in any sort of way, like I had just pluged a USB cable with nothing on the other end so I tried my previus tricks tryng to mess with battery charge, and nothing,

Admitedly I geve it a shorter amount of time to work, like 5 hours, but still, it didnt wor so I decided to open up the phone.

Ill spare you the what didnt work as I think Im writing too many bricks of text.

I opened the phone, search a video on how to do it, but basically remove the cards holster, and push down on the usb port with your fingernail

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when a gap appears between the screen and the back cover, stick something hard and thin (I used my nail) and slide it all over the union.

be careful with the part where the camera is, it has another clamp in there and you might damage it if not careful.

then remove the black plastic that covers the camera area, under that there are conectors of the screen and batttery, disconect the battery, by pulling up.

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and then you do the EDL thingy like this:

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or this:

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Ok so what you do to do EDL is create contact between those two pins or that pin and the metal plate, and roughly at the same time conect the phone to the computer, you can try with battery pluged, battery unpluged, conecting first and touching after, the opposite, hell even the screen has an effect sometimes (in redmi note 10 it does) so there are a lot of combinations to try and check waht does something.

In a really bricked device you wont be able to tell if it works as is, so you should open device admin, and check wether it gets updated on there when you plug it (in fact, this is a good way to tell people if this is even necesasry so this bit wil be writen twice in this post) thing is, you need the phone to do anything at all, even if its just a second, try and try until you find a reliable way to get it to update something on device admin.

(FOR ME, IT WAS PIN AND PLATE, CONECTING PINS INMEDIATELY AFTER PLUGING, WITH THE BATTERY DISCONECTED, SCREEN CONECTED, AND I LIKED RUBING MY TWEEZERS AROUND TO MAXIMIZE THE PROBABILITY OF CONTACT BETWEEN PLATE AND PIN, MIGHT BE DIFFERENT FOR YOU)

Youll need a piece of some thick coper wire to make a replacement of the tweezers if you dont own that kind of tweezers, here are mine, but you can do it however you want, this was just to make it easier for me.

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then, once you get your reliable method of doing it, youll use what I left on extra installs, install python MTK Driver, and then libUSB

On LibUSB youll need to install the filter for your phone on a certain USB port, so when it asks you to do so you select that option "install device filter" I recomend unpluging everything you can, and remember whats what, cuz you might only get a second to install the phone filter, unplug and plug and use EDL as many times as necesary to install the filter of your phone on that USB port. when you see it just select it and click on install, but remember to be quick

with that done, you can go to Bypas OFF, and run broom.bat, it will probably fail, youll need to go to google and search the errors, IIRC youll need to run on CMD

pip install pyserial

pip install pyusb

but its a very simple fix, brom.bat will tell you, no module named "Module" can be found, and you go and google that and it will tell wou what to install, but do google it tho, the names are not obvius in this case.

once the program asks about waiting for bootroom, you need to do the edl again in the same port, and youre redy to go

open SPFlashTool, and go to options, disable the check lib da match checkbox, and in conection, check the right options, USB port, no battery, and select the "no auth.bin" as download agent.

download the official 12.5.6.0RCDMIXM FASTBOOT ROM.tgz and unzip it on your desktop.

select the scatter file thats inside the ROM/images/

and click on download on spflashtool, wait the right amount of time and its done.

hope it helps somebody its my first time doing EDL succesfully on this phone, I hadnt wanted to do it because I thought opening it would damage the waterproofness of it, and although thats probably still true, its not that bad, the phone only had a really smal portion of glue around the camera.