[Moto E4 Plus Questions & Answers] fernandocg30:
Hello everyone, how do you do?

I've got this phone that was running perfectly the stock rom, but I have that addiction to customize every phone I land my hands into (I guess some of you either haha).

But

This time something horrible happened, and I just can't back this phone to work. I'll tell what did I've done and I'm hopping you to help me (just paid a lot to fix the broken screen, don't want to buy a new board...)

Here we go: yesterday, several times I've tried to unlock the phone, and figure out that the fastboot command to do that have changed to fastboot oem unlock (at least in this phone), and had no need to copy that code into Motorola's page. After unlock, tried to install TWRP Recovery, several times, and finnaly got one that worked here. Okay. Ready to go. Also had difficulty to find a ROM that is compatible with this phone (I wanted some with Android 9, or 8.1, at least). I was capable to install the Lineage OS 15 Unnoficial for Nicklaus, but got stuck in Lineage OS Logo Screen. Fine. Downloaded the Lineage OS 14 Unnoficial (Android 7.1), flashed, and everything went fine! The ROM was installed, configured, but... My phone has the OnScreen Buttons for Navigation... And this ROM doesn't appear to get this to work... Every time I went to settings page and tried to enable this feature, the Settings Application stucks and phone restarts. So, at this point, I thought that the ROM was with some code problem, whatever, decided to download another. And (that was a HUGE MISTAKE). Downloaded the DotOS ROM here.

After flash, the ROM loaded up fine. Settings, ok, system, ok. But, the same problem with the Navigation Buttons. What? Again? Yes. Tried to enable via settings, but I realized that some configurations of Lineage OS installation is still there - forgot to wipe data before flashing ROM... But at this time (I guess it was 2AM) I had no patience to reboot, wipe, boot, configure, and decided to factory reset using the option in Settings menu. The DotOS shows me a logo saying "Wiping data". The phone reboots. And reboots. And reboots. But, the TWRP stills working, and tried many, many times to flash all sort of ROMs with no success at all.

I was going insane, you know, WHY I CAN'T FLASH THE ROM I'VE JUST FLASHED MINUTES AGO?? Got a clue: somehow when wiping data, DotOS bugged my /data partition (in TWRP, when wiping data, got an error in this partition, and cant fix it using TWRP fix menu). Tried a lot of tutorials over the internet to fix that partition, with no success. And, unfortunately, at that point my /system and /cache partition got broken too.

But, I had my secret weapon: THE STOCK ROM. Yes. Everytime all went wrong, is quite simple: just install the factory's ROM, and you will be fine. Right? Wrong. Really don't know why, I was not able to flash some images of the ROM (boot, recovery, system also). Thought I've downloaded the wrong Stock ROM. Tried another. And another. No success. What the hell? At this point my mind was not lucid enough, and decided to STUPIDLY FORMAT PARTITIONS BY MY SELF. Reboot Bootloader. Connect Cable. Fastboot.

fastboot devices -> OK

fastboot erase boot -> OK

fastboot erase userdata -> OK

fastboot erase system -> OK

That's it! Fixed! Now is just reboot, and... Reboot. Reboot. Reboot. Reboot.

Ok, Vol Down + Power. Nothing. Ok, Vol Up + Power. Nothing. Ok, Vol Up + Vol Down + Power, Vol Power + Dow Up, Fingerprint + Screen + Two Punches + Power. Nothing.

Stuck in boot loop. My worse nightmare. Thinked: okay, lets remove the battery, and... Remember I've just fixed the broken screen? Yeah. Out of lucky, the assistance tried THREE TIMES to change my screen, because the screen's provider at first provided a screen with ghost touches, at second a screen that had light glitches. At third, a correct screen. Don't want to loose my warranty, you know. If this third screen has some problem either? The assistance put that tag over the screw, you know. Can't take my battery off. But I really don't know if removing the battery will really help, because I've erased my boot partition. I hate me. My wife too (but she hated before). Now, got this tutorial: Ultimate Guide for [Bootloop Recovery] Noob Friendly, that is a little outdated, and can't help me. But gave me some hope: So, my phone isn't bricked yet! I can fix it!

But I really don't know how.

I hope someone helps me, and that this topic can be useful for any one who got stuck in Boot Loop from here to eternity.

Regards,

Fernando Garcia (sorry for my bad english, I only speak JavaScript)