Help Phone stuck at T-mobile logo when booting

[Conwolf]

Hey! My phone, a LG-L90 D415 currently will not turn on. It gets past the LG logo then it just loops the T-Mobile logo over and over.
I factory reset it with the button trick and it didn't help. I ended up taking the battery out because the T-Mobile jingle kept playing every time and I had other things to do ;u; I couldn't seem to turn it off any other method since every time I held the power button it just brought me to the LG screen and everything would start over agian.
My phone was rooted with Kingroot and that's the only thing I've really done to it other than install AdAway. 2-3 days before this happened, my phone had extreme lag spikes and it would often become unresponsive for a few minutes and sometimes would reboot by itself. Before these lag spikes, everything was fine except for occasional uncalled for reboots and normal lag.
Any help is appreciated!

 

[Conwolf]

Ack does anyone know how to solve this? I don't have any backup phone except for a flipphone :<

 

[James L]

Hey! My phone, a LG-L90 D415 currently will not turn on. It gets past the LG logo then it just loops the T-Mobile logo over and over.
I factory reset it with the button trick and it didn't help. I ended up taking the battery out because the T-Mobile jingle kept playing every time and I had other things to do ;u; I couldn't seem to turn it off any other method since every time I held the power button it just brought me to the LG screen and everything would start over agian.
My phone was rooted with Kingroot and that's the only thing I've really done to it other than install AdAway. 2-3 days before this happened, my phone had extreme lag spikes and it would often become unresponsive for a few minutes and sometimes would reboot by itself. Before these lag spikes, everything was fine except for occasional uncalled for reboots and normal lag.
Any help is appreciated!

What was the Android version on the phone? I see a kdz file to re flash the firmware but without knowing if you had 4.4.2 etc i couldn't say yes it would work or no it wouldn't.
At the worst case it wouldn't fix the issue due to a hardware issue, or damage. Or it could fix the software issue without issues.

Once you reply i will be more then willing to link you to the files i found.

 

[Conwolf]

What was the Android version on the phone? I see a kdz file to re flash the firmware but without knowing if you had 4.4.2 etc i couldn't say yes it would work or no it wouldn't.
At the worst case it wouldn't fix the issue due to a hardware issue, or damage. Or it could fix the software issue without issues.

Once you reply i will be more then willing to link you to the files i found.

I definitely had kit kat, but I'm not sure if it was 4.4.2 or not.

 

[James L]

I definitely had kit kat, but I'm not sure if it was 4.4.2 or not.

Here's a link for the firmware.
http://www.andromods.com/download-files/stock-firmware-rom-tmobile-lg-optimus-l90.html

Here is a link for flashing the kdz.
http://forum.xda-developers.com/showthread.php?t=2770938
The link for the firmware on XDA is dead.

 

[Conwolf]

Here's a link for the firmware.
http://www.andromods.com/download-files/stock-firmware-rom-tmobile-lg-optimus-l90.html

Here is a link for flashing the kdz.
http://forum.xda-developers.com/showthread.php?t=2770938
The link for the firmware on XDA is dead.

Do I just follow this?
http://forum.xda-developers.com/showthread.php?t=2625044

 

[Conwolf]

Here's a link for the firmware.
http://www.andromods.com/download-files/stock-firmware-rom-tmobile-lg-optimus-l90.html

Here is a link for flashing the kdz.
http://forum.xda-developers.com/showthread.php?t=2770938
The link for the firmware on XDA is dead.

AH could you walk me through or link me to a tutorial?

 

[James L]

AH could you walk me through or link me to a tutorial?

My fault, bought a new car today so i've been running around.

As soon as i get to my laptop i'll do screenshots and write a step by step for you.

 

[James L]

AH could you walk me through or link me to a tutorial?

Actually... not sure how long it'll be before i get home so look at this link.
I'm not a fan of youtube tutorials so here's a sure fire link as far as how to.

http://forum.xda-developers.com/showthread.php?t=2798301

 

[AZgl1500]

youtube tutorials

I don't like them very much either, the 'actor' is always in the way of what is being worked on, you can't see everything they do.
they leave out critical steps leaving you wondering WTH, how come it don't work?

I am learning WordPress, and having to use YouTube tutorials from different people, one tells me things the other totally fails to mention.