Problems on my z5c after rooting (bootloader unlocked, TWRP installed) - Xperia Z5 Compact Q&A, Help & Troubleshooting

I rooted my z5c, unlocked the bootloeader, flashed the recovery.img and the boot.img and "restored" the DRM keys, but I don't know why, since like a week ago the z5c it's getting hot too quickly, and starts crashing somes apps, like whatsapp, or while I'm wacthing a video on youtube it happens the same.
I restored it by the settings menu option, but when I installed some apps it happens again
Any idea what it can be? I'm getting tired of this.

You need to first check if some app is eating juice and running constantly. Next is to flash rom again and see if that helps if you dont find anything draining juice.
Lastly if desperate you can alwaya start from scratch. Flash again with flashtool, wipe all ( take backups), root again etc.

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Lollipop 5.0.2 broken update?

I have a VF-895N (rooted and stock rom - update 130FFN2), yesterday I decided to update my phone from 5.0.2 120FFN2 to 5.0.2 130FFN2, I removed root and made a hard reset, started the update process but at the very end of the update, it said "error", then I got stuck into a bootloop " no command" but managed myself to re-flash stock rom already updated with the latest version. When it finished flashing, I booted up the phone, started to remove bloatware, rooted the phone and started to install apps like Facebook, Instagram and other stuff like that.
I finished installing all the apps I wanted but I noticed my battery was draining very fast and also my phone was overheating, I tried to open Instagram for the first time but it freezed, tried the same with Facebook, it freezed.
Overall the phone's performance was very bad comparing with the one I had before re-flashing.
Now I don't know what to do, some apps close or freeze, the phone does not overheat much now bcuz I installed setcpu and set the values to min.=240mhz and max.=980mhz tho I don't understand much of these things... (Initially the values were 1.020mhz of min. And 1.020mhz of max.
I did hard reset 3 times and I always got the same result and I also cleaned the cache too.
I can't downgrade bcuz there is no stock rom available anywhere except for a flash tool (Sugar QCT) that flashes the latest update, which I already have and seems to be broken.
Please help me.

Android heavy lagging/freezing/desktopscreen moving left<->right [HELP]

Hello guys,
So, i have rooted my Device (BQ M5) 1 Month ago and installed Xposed on it. Everything was fine until yesterday, where i was underway and streaming via Chrome a video. I didn't close Chrome and simply locked my phone. Several minutes later, when I tried to unlock my phone, i directly noticed heavy lag (response 2seconds - 2min - locks device). I thought a reboot might solve this issue, but i was wrong. I started to uninstall several previously installed apps and tweaks (where the newest App/Tweak was 8 days "young".
After a reboot, still heavy lagging. I opened TWRP and Cleared Dalvik and Cache, did a reboot in System, Recovery and Bootloader. I even flashed the device with a complete fresh OS. The problem still remains. After several re-flashings, some cache clear, factory resets and SuperSu unrootement i somehow managed to get it to work again. So I started from 0 again, and installed all previous apps, and root apps. Everything was fine for several hours (connected to Wi-Fi), so i was installing Xposed again, with 2 apps/tweaks: Flat Style bar, youtube adaway. Everything was still allright untill i left the house. I unlocked my device 50min later (for the first time when i left my house) and boom, the lagging was back. (Don't have internet outside my house).
As soon as i came back, i retried everything to remove the lag, however I did now several things in addition for over 3h and the lagging sill remains. I down and upgraded the OS, formatted the data, did every clear in TWRP and Bootloaded that i could find. I reset it via Settings and flashing. I installed SuperSu and de-installed it.
I don't know what else i could do, to solve this issue. The lag remains when using TWRP, Bootloader, using the Device, or when the Booting animation of android appears (slow animation or with a "fps of 0,05").
Please help me!
Device: BQ M5
Had Android 5.1.1. on it and Installed xposed sdk22 arm, and installed SuperSu via TWRP.
All files were downloaded from official posts here on xda, or from the brands website.
p.s. Even the littlest information which could help, please share!
p.p.s Here's a video that shows whats going wrong. After the reboot the booting animation continues like this around 1-3min. and then at the unlock screen, the "lag" still remains. What i noticed too, is that the charging animation in the top right is running flawlessly, however opening apps and all the rest is really slow!
youtube(dot)com/watch?v=Htuhj8UzWs4

Managed to get root - trying to flash rom

I have an obscure cheap offbrand phone and have been trying to root it for 3 years to which I at last managed to root it with Kingroot, which up to recently, didnt used to work by rooting it (nothing did). So I have root access, its a step in the right direction but ultimately I'm trying to flash a custom rom like cyangwin.
The problem is 2 things, my phones bootloader is weird, its like its been stripped of everything and does absolutely nothing. Fastboot tools finds it but all attempts at any kind of interaction just cause it to hang with "..." indefinitely. Anytime I fastboot I almost always have to take battery out and re-insert it as theres no way of leaving fastboot.
The other problem is I deleted all the garbage apps that came with my phone which caused Google services like playstore to crash so I decided to reformat and re-root my phone but the recovery didn't recover my phone, it only formatted 2 folders /data and something else so I now have a stable phone but is void of all Google services including play-store but all the garabage apps are still missing so thats a plus. Also the recovery left all my setup and configuration as-is like wifi passwords which I found odd for a factory reset.
I adb installed several root apps like RomToolkit and am just trying to figure out what to do now and how to proceed from here. I have a rooted phone, is stable, void of all garbage apps and google apps, services, and the like including playstore. I want to flash a rom and have no fastboot to work with. Any help as to where I can go from here? Is there no way I can just brute force it since I have root filesystem access? Maybe replace fastboot with one that works as expected?

Can't fix Bugged custom ROM

I have a Galaxy S III GT-I9300 I bought in 2014. After three years, I downloaded a custom ROM from xda-developers (android 4.3 is all I remember about it) and installed it successfully. It worked alright until one day when I wanted to sell the phone and a customer wanted to buy it on short notice, and I rushed to delete my files from the phone, but I destroyed the Android... I connected it to my laptop and shift-deleted some system files.... since then, the phone is delaying when trying to unlock (if i lock it now and try to unlock it a few times, it opens harder and harder), when I'm using apps it continously shows that some .com processess stopped working, and if I try to turn on the bluetooth, the phone instantly freezes and restarts itself.
I tried reinstalling two original ROMs, (version 4.1.2) successfully, but the data on the phone&the system problems remain the same.
I'd like to know how can I make a hard reset, meaning in deleting all the files&settings as it was brand new, just to clear everything, like clearing CMOS. I also think the recovery mode is damaged and I'd like to fix it somehow (if this is possible). The installation process I did for installing the custom ROM from XDA-devs was long and complicated, I had to do a lot of things... and I just want to get the phone fixed and restore to default (or even to fix bugs on this android version) its android, kernel & everything could be ,,reflashed''.
I'm willing to pay if someone helps me fix the problems and it really works. Thank you!

Can't fix Bugged custom ROM

I have a Galaxy S III GT-I9300 I bought in 2014. After three years, I downloaded a custom ROM from xda-developers (android 4.3 is all I remember about it) and installed it successfully. It worked alright until one day when I wanted to sell the phone and a customer wanted to buy it on short notice, and I rushed to delete my files from the phone, but I destroyed the Android... I connected it to my laptop and shift-deleted some system files.... since then, the phone is delaying when trying to unlock (if i lock it now and try to unlock it a few times, it opens harder and harder), when I'm using apps it continously shows that some .com processess stopped working, and if I try to turn on the bluetooth, the phone instantly freezes and restarts itself.
I tried reinstalling two original ROMs, (version 4.1.2) successfully, but the data on the phone&the system problems remain the same.
I'd like to know how can I make a hard reset, meaning in deleting all the files&settings as it was brand new, just to clear everything, like clearing CMOS. I also think the recovery mode is damaged and I'd like to fix it somehow (if this is possible). The installation process I did for installing the custom ROM from XDA-devs was long and complicated, I had to do a lot of things... and I just want to get the phone fixed and restore to default (or even to fix bugs on this android version) its android, kernel & everything could be ,,reflashed''.
I'm willing to pay if someone helps me fix the problems and it really works. Thank you!

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