Question T10 Head unit CANBUS for Mazda 3 frozen after trying to update boot logo! - FYT Android Head Units

I've been trying to set up a boot logo of Mazda and ended up I guess updating some software and when I restarted my car this happened. Nothing responds, nothing moves, the only phisical button is the RST which you can press with a needle but it only restarts it back to this. Nothing else has any results. I tried with a usb keyboard but it doesn't do anything. When I plugged in my phone on the usb it charges. But that's all.
What can I do, how can I reboot it. Please help
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big boot problem

my phone dosen't boot at all, it is stucked with this screen:
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I've reflashed it, but it is the same...
It won't do a hard reset to, i dosen't response.
After a little bit of agresive shakeing it started, but after the first restart it stuck again.
It seems to be looseing some contact inside the phone.
I've fixed it. I didn't sleep all night
The problem was with flat cable that was out of its contact place, I think it is because I've droped the phone once yesterday.

Problem with vol buttons.

Hi.
Short story.
When I replace screen, I broke flex from vol buttons.
I try replace them but not successful.
So I unsoldering and soldering again.
Till I completely destroying flex cable.
But, when I check with multimetr, is strange thing.
Is short circuit between vol+ and ground. I clean around connectors, but don't see any bridges or others suspected things.
Any one have idea hot to resolve?
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SM-J327V Bricked? Can only boot into Download Mode but shuts off when USB is inited

I'm not entirely sure what happened to this phone (Galaxy J3 Eclipse 2017 SM-J327V) but I was told something got borked during an update, the phone will hang at the boot logo even when attempting to boot into the recovery. I can boot successfully into download mode but whenever I connect it to anything over USB (except a charger) it shuts off and reboots.
And on rare occasions it'll go to a solid blue screen and hang, one time even continuously vibrated
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Dead 3a with unusual display

I have a friend who sent me this pic of her 3a that she said died suddenly while talking on the phone. I tried to tell her the steps for a hard reset and also for booting into recovery, but she says it only either goes to black screen or the screen in the pic. Since I'm not there and can't try it myself, I'm not sure if she's trying the reset / recovery button sequence properly.
Has anyone seen a screen that looks like this? If so, is it a hardware failure?
TIA for any input.
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Bricked chinese PX5 headunit

Hello. 2 years ago bought a android headunit from aliexpress. Later on, noticed a bug - sound from bluetooth is quieter than from the radio. Tried factory reset, different equalizers, nothing helped. Then I tried to flash it with newer version, hoping that it will help, now it doesn't turn on, the screen is always black I can't boot in to recovery menu by pressing reset button and then pressing on it one more time, I was able to access it through settings. Maybe there is a chance to somehow make it alive?
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