Database Develop

Xperia T will not turn on !

Hello Guys.I really hope that there is among you who can solve my problem.
My phone: Sony Xperia T (lt30p)
The battery is empty. Power button does not respond to there was no red light.
I started charge a few minutes and lighted in red yeee but after a few minutes does not light up and start all over again. why ?
I tried to hold down the power button did not work. Also power button and volume up button is also the case.
How can you get to recharge the battery?
Thanks and sorry my poor English.

Crema92 said:
Hello Guys.I really hope that there is among you who can solve my problem.
My phone: Sony Xperia T (lt30p)
The battery is empty. Power button does not respond to there was no red light.
I started charge a few minutes and lighted in red yeee but after a few minutes does not light up and start all over again. why ?
I tried to hold down the power button did not work. Also power button and volume up button is also the case.
How can you get to recharge the battery?
Thanks and sorry my poor English.
Click to expand...
Click to collapse
I found this for you in another post talk.sonymobile.com/t5/Xperia...y/td-p/279854/. Sry i can't paste links

Charge overnight or up to 24hrs and then try to turn on again. This has been reported often.
Sent from my LT30p using xda app-developers app

But i have a similar problem to the stated one. After flashing the new leaked 4.3 Rom from DoomLord my phone ran just fine for nearly a week. Yesterday i inserted a new sd card and wanted to format it in recovery. But then after formating sdcard1 my phone totally freezed. However i rebooted it from recovery. No led when i plug in. I tried every combination of buttons presses (also volume up + power button which does normaly the trick). I even opened the phone and unplugged battery for 2-3 min, still nothing. Do you guys have any idea what i else can do, or is my phone simply broken?

IceTtum said:
But i have a similar problem to the stated one. After flashing the new leaked 4.3 Rom from DoomLord my phone ran just fine for nearly a week. Yesterday i inserted a new sd card and wanted to format it in recovery. But then after formating sdcard1 my phone totally freezed. However i rebooted it from recovery. No led when i plug in. I tried every combination of buttons presses (also volume up + power button which does normaly the trick). I even opened the phone and unplugged battery for 2-3 min, still nothing. Do you guys have any idea what i else can do, or is my phone simply broken?
Click to expand...
Click to collapse
charage the phone for 24 hrs or overnight and try flashing the stock rom via flashtool. if it did not work with vol down button+power try this method 2
try to do a hard reset; (while NOT connected via usb or something) hold power+vol up, it will vibrate 1 time, and then 3 times quick. After that try to connect the usb (NOT while pressing any buttons) and press vol down+power
That should connect it into flashmode.

nipadog and
romeoofair said:
charage the phone for 24 hrs or overnight and try flashing the stock rom via flashtool. if it did not work with vol down button+power try this method 2
try to do a hard reset; (while NOT connected via usb or something) hold power+vol up, it will vibrate 1 time, and then 3 times quick. After that try to connect the usb (NOT while pressing any buttons) and press vol down+power
That should connect it into flashmode.
Click to expand...
Click to collapse
Thank you for your reply.
Unfortunately this didn't work. However after letting the phone charging for a while i got a red LED. Which disappears every 5 min and comes again after another 5. When i disconnect phone from charger and connect to my notebook nothing happens. I mean I press vol down + power there is nothing the phone doesn't react. If i try i hard reset. The red LED is blinking and the phone doesn't vibrate .

IceTtum said:
Thank you for your reply.
Unfortunately this didn't work. However after letting the phone charging for a while i got a red LED. Which disappears every 5 min and comes again after another 5. When i disconnect phone from charger and connect to my notebook nothing happens. I mean I press vol down + power there is nothing the phone doesn't react. If i try i hard reset. The red LED is blinking and the phone doesn't vibrate .
Click to expand...
Click to collapse
check with the other guys bro. i dont think its a hardware issue

Maybe ur battery just tried...u shud try it wid some other battery to see if it's the battery's fault or not..
Sent from my GT-S7562 using XDA Premium 4 mobile app

Ok, I disassembled the phone again. I removed battery and measured voltage seems to be fine. Besides battery life was OK when it worked (OK compared to my SXplay ). Additionally i tried the battery trick from this post http://forum.xda-developers.com/showthread.php?t=2449242. However the bahavior on charger is still the same 5min red LED 5min no LED at all. Excluding it is a driver problem I ran flashtool on my linux machine and tested both the windows and linux flash tool with my xperia Play which is correctly detected in flash mode.
Thanks guys for your hints upon now but I would be happy to get additonal ones. I'm not afraid of disassembling and getting my hands dirty.
I hope I will get this great phone running again since I've really started to love it :-/.

Same situation with CM 10.2
Hi there I'm in the same situation with my xperia V.
Bootlocker unlock and flashed 10.2.0 (latest stable rel) and gapp. No issue everything was working but huge battery drain due to Media Scanner, so I've reboot in recovery wipe the cache and format the external sd then reboot all from the recovery menu.....then the phone is dead.
now in change since more that 30 hours and get red light for some minutes that nothing at all....nothing pushing power, nothing pushing volume nothing at all.....if i connect without battery to the power red light blinks.
how is that possible???? at least recovery node should work...is that an HW problem? but how can i have created an HW problem with a wipe a format and a reboot????
Please help...
Thanks in advance.

IceTtum said:
Ok, I disassembled the phone again. I removed battery and measured voltage seems to be fine. Besides battery life was OK when it worked (OK compared to my SXplay ). Additionally i tried the battery trick from this post http://forum.xda-developers.com/showthread.php?t=2449242. However the bahavior on charger is still the same 5min red LED 5min no LED at all. Excluding it is a driver problem I ran flashtool on my linux machine and tested both the windows and linux flash tool with my xperia Play which is correctly detected in flash mode.
Thanks guys for your hints upon now but I would be happy to get additonal ones. I'm not afraid of disassembling and getting my hands dirty.
I hope I will get this great phone running again since I've really started to love it :-/.
Click to expand...
Click to collapse
How much voltage is the battery? For that battery trick, are you sure, you did it correctly? Could you post some pictures? If you're sure, it's the battery, buy another one.

IceTtum said:
I found this for you in another post talk.sonymobile.com/t5/Xperia...y/td-p/279854/. Sry i can't paste links
Click to expand...
Click to collapse
Mad Marty said:
Charge overnight or up to 24hrs and then try to turn on again. This has been reported often.
Sent from my LT30p using xda app-developers app
Click to expand...
Click to collapse
more than a week trying. I tried almost everything but does not work just the power button blinking red light, Lights up for a few minutes and lights down few minutes -.- Please help me !!

peetr_ said:
How much voltage is the battery? For that battery trick, are you sure, you did it correctly? Could you post some pictures? If you're sure, it's the battery, buy another one.
Click to expand...
Click to collapse
Ok i attached a picture. The measured voltage is 3.07 V between kathode and anode marked in red (of course I measured it when the battery was disconnected. Moreover you see the soldered connection to the back of the battery marked in green. I've already tried what I red in another post in this forum, where the guys there suggest to unplugg the battery and try to connect the phone in flash mode. This results in a blinking red LED :-/. No idea what else I can do

IceTtum said:
Ok i attached a picture. The measured voltage is 3.07 V between kathode and anode marked in red (of course I measured it when the battery was disconnected. Moreover you see the soldered connection to the back of the battery marked in green. I've already tried what I red in another post in this forum, where the guys there suggest to unplugg the battery and try to connect the phone in flash mode. This results in a blinking red LED :-/. No idea what else I can do
Click to expand...
Click to collapse
Charge the battery somewhere or buy new battery. 3.07V is not enough.

Battery Voltage
peetr_ is right, using GPS Essentials to measure my battery voltage at 12% charge (not the most accurate way I know) it's measuring at 3.611V

Pushing power button red light blinks
stilicone said:
Hi there I'm in the same situation with my xperia V.
Bootlocker unlock and flashed 10.2.0 (latest stable rel) and gapp. No issue everything was working but huge battery drain due to Media Scanner, so I've reboot in recovery wipe the cache and format the external sd then reboot all from the recovery menu.....then the phone is dead.
now in change since more that 30 hours and get red light for some minutes that nothing at all....nothing pushing power, nothing pushing volume nothing at all.....if i connect without battery to the power red light blinks.
how is that possible???? at least recovery node should work...is that an HW problem? but how can i have created an HW problem with a wipe a format and a reboot????
Please help...
Thanks in advance.
Click to expand...
Click to collapse
situation now, more than 30h of charging, is changed a little now if a push the power button the red light blinks but no reboot no vibration nothing at all.......is it worth to try another battery?
please provide me some guidance.
BR

Yes, it's worth to try it. Just try to borrow it from someone, let it boot and try to use your battery again.

no way even changing the battery
peetr_ said:
Yes, it's worth to try it. Just try to borrow it from someone, let it boot and try to use your battery again.
Click to expand...
Click to collapse
No way even with a new battery

Really? Neither flash mode?

xperia t now alive
hello guys I have a solution to this problem.and I guess you guys are lucky cause I experienced this problem also.you don't need to panic cause this will help.all you need to do is to get a new battery either online or in your domestic regions.if you wish to get it online go to aliexpress.com And it will be shipped to you no matter where you are on this earth.the reason is because the xperia t has been drained to the core and so it can't come on in other to flash in a kernel or image. When you've bought the battery you can actually fix it by yourself cause I'll Show you how.when you've fixed it then you flash in 4.3jb stock room in it and then your phone comes back alive like mine.IV actually used the phone for a month before that problem occurred but now say no more to that cause this thread will work 100%
---------- Post added at 12:33 AM ---------- Previous post was at 12:08 AM ----------
Crema92 said:
Hello Guys.I really hope that there is among you who can solve my problem.
My phone: Sony Xperia T (lt30p)
The battery is empty. Power button does not respond to there was no red light.
I started charge a few minutes and lighted in red yeee but after a few minutes does not light up and start all over again. why ?
I tried to hold down the power button did not work. Also power button and volume up button is also the case.
How can you get to recharge the battery?
Thanks and sorry my poor English.
Click to expand...
Click to collapse
hello guys I have a solution to this problem.and I guess you guys are lucky cause I experienced this problem also.you don't need to panic cause this will help.all you need to do is to get a new battery either online or in your domestic regions.if you wish to get it online go to aliexpress.com And it will be shipped to you no matter where you are on this earth.the reason is because the xperia t has been drained to the core and so it can't come on in other to flash in a kernel or image. When you've bought the battery you can actually fix it by yourself cause I'll Show you how.when you've fixed it then you flash in 4.3jb stock room in it and then your phone comes back alive like mine.IV actually used the phone for a month before that problem occurred but now say no more to that cause this thread will work 100%

[Q] Xperia Z Strange chargins issue

I replaced my broken screen recently, the battery had been lying dead for more than a month. Now after replacing the screen when i try to charge the phone, the RED LED blinks on a frequency of 7-10 seconds.
When I disconnect the battery flex and connect it to my PC it goes to fastboot mode, I was even able to flash a stock rom. When I connect it to main charger with the battery disconnected, display shows sony and turns off.
When reconnect the battery it won't display anything and the RED LED keeps blinking frequently. What might be the problem faulty battery ? or main board problem ?

dinesh17 said:
I replaced my broken screen recently, the battery had been lying dead for more than a month. Now after replacing the screen when i try to charge the phone, the RED LED blinks on a frequency of 7-10 seconds.
When I disconnect the battery flex and connect it to my PC it goes to fastboot mode, I was even able to flash a stock rom. When I connect it to main charger with the battery disconnected, display shows sony and turns off.
When reconnect the battery it won't display anything and the RED LED keeps blinking frequently. What might be the problem faulty battery ? or main board problem ?
Click to expand...
Click to collapse
The battery is completely discharged. Keep it on the wallcharger for 24 hours and then try to boot it.

St.Jimmy90 said:
The battery is completely discharged. Keep it on the wallcharger for 24 hours and then try to boot it.
Click to expand...
Click to collapse
But if it is discharged completely and when tried to recharge why would the red led keep blinking and not continuously glowing ?

dinesh17 said:
But if it is discharged completely and when tried to recharge why would the red led keep blinking and not continuously glowing ?
Click to expand...
Click to collapse
It is not unusual. Just wait and you will see that it comes back on

St.Jimmy90 said:
It is not unusual. Just wait and you will see that it comes back on
Click to expand...
Click to collapse
Now the battery is charging I guess, RED LED is now glowing constantly which has been blinking earlier. Even though I was not able to Switch it ON.

The only way to recharge the phone is by using charging dock

[Q] HTC One Charges but Won't Turn On

Hello guys,
A while ago, I was just doing stuff I normally do with my phone. I flashed a ROM and it rebooted normally. I then flashed a MOD using TWRP recovery. As usual, every MOD that uses Aroma Installer has a "Reboot device after install" option so I chose that and then **** happened.
Out of nowhere my One suddenly shuts off (The install was done so...)
I have tried the sensor under bright light trick and my phone does vibrate once but nothing actually happens. Just a black screen and stuff.
Sometimes it does go into this screen where it shows a battery icon with thunder bolt in the middle (Yes I know that is the charging screen. But, I also believe that it acts like a progress bar and it does not do THAT.)
Then again, it dies and it doesn't have the charging LED nor would it turn on.
Help is appreciated. I know basic and complicated android stuff but I can't do any of that if my phone is dead
Edit: When I press the power button for a few seconds, it vibrates but nothing happens. The screen is still off and the charging LED is not turning on as well.
Edit: Okay, when I do get it to charge, it shows that charging screen and when I unplug it, it freezes with the charge light on. The phone is also heating up so that does mean it's charging
Regards,
TAM

Sent from my HTC One using XDA Free mobile app

The Android Manual said:
Hello guys,
A while ago, I was just doing stuff I normally do with my phone. I flashed a ROM and it rebooted normally. I then flashed a MOD using TWRP recovery. As usual, every MOD that uses Aroma Installer has a "Reboot device after install" option so I chose that and then **** happened.
Out of nowhere my One suddenly shuts off (The install was done so...)
I have tried the sensor under bright light trick and my phone does vibrate once but nothing actually happens. Just a black screen and stuff.
Sometimes it does go into this screen where it shows a battery icon with thunder bolt in the middle (Yes I know that is the charging screen. But, I also believe that it acts like a progress bar and it does not do THAT.)
Then again, it dies and it doesn't have the charging LED nor would it turn on.
Help is appreciated. I know basic and complicated android stuff but I can't do any of that if my phone is dead [emoji14]
Edit: When I press the power button for a few seconds, it vibrates but nothing happens. The screen is still off and the charging LED is not turning on as well.
Edit: Okay, when I do get it to charge, it shows that charging screen and when I unplug it, it freezes with the charge light on. The phone is also heating up so that does mean it's charging
Regards,
TAM
Click to expand...
Click to collapse
Does it show up in Device Manger on your PC at all?

Danny201281 said:
Does it show up in Device Manger on your PC at all?
Click to expand...
Click to collapse
No. But I was able to drain the battery and once I plug it in using the original HTC wall charger (which is the one that I always use to charge it.) it charged but the charging LED is blinking (mut have drained it self good overnight) am I making progress or did I make it worse?

The Android Manual said:
No. But I was able to drain the battery and once I plug it in using the original HTC wall charger (which is the one that I always use to charge it.) it charged but the charging LED is blinking (mut have drained it self good overnight) am I making progress or did I make it worse?
Click to expand...
Click to collapse
It's difficult to say at this point, Personally I would just leave it charge over night. Then try and power it on with Volume Down+Power while still connected to the charger. And it definatly doesn't show up in device manager, not even as Unknown Device or QHUSB_DLOAD? I find that a little odd.
But there are signs of life so I think a good charge may do the trick.

Danny201281 said:
It's difficult to say at this point, Personally I would just leave it charge over night. Then try and power it on with Volume Down+Power while still connected to the charger. And it definatly doesn't show up in device manager, not even as Unknown Device or QHUSB_DLOAD? I find that a little odd.
But there are signs of life so I think a good charge may do the trick.
Click to expand...
Click to collapse
Yes. I did plug it into my laptop's usb ports last night when it still had charge (usb 3.0 if that helps) but it was neither recognized nor visible in the device manager. I hope! I am now charging my phone as we speak. I hope it's not dead too

Okay so...I installed HTC Sync and still nothing. It was not recognized and it's still not booting

Try Windows 7 USB 2.0
just htc Drivers
Try to go to Boot loader and flash firmware
if it show battery with charging sign it means Soft Brick or battery problem
if it showed nothing like no charging light or nothing on screen then its Hard Brick

yatindroid said:
Try Windows 7 USB 2.0
just htc Drivers
Try to go to Boot loader and flash firmware
if it show battery with charging sign it means Soft Brick or battery problem
if it showed nothing like no charging light or nothing on screen then its Hard Brick
Click to expand...
Click to collapse
Then it is probably a soft brick or a battery problem. Because when I got home I immidiately pluged it into the wall charger for it to charge and it charged showing the charging screen with a blinking LED. One more thing, if I press the power button for a few seconds it vibrates and then nothing happens. I am planning to leave it charging over night. Is that a good idea?

The Android Manual said:
Then it is probably a soft brick or a battery problem. Because when I got home I immidiately pluged it into the wall charger for it to charge and it charged showing the charging screen with a blinking LED. One more thing, if I press the power button for a few seconds it vibrates and then nothing happens. I am planning to leave it charging over night. Is that a good idea?
Click to expand...
Click to collapse
can I ask what your flashed before it did this ?
also crazy question, but have you tried holding down the power button till the lights on the bottom flash approx. 12-15 times ? this resets the device, Ive had to do this after many flashes of various things.

Seanie280672 said:
can I ask what your flashed before it did this ?
also crazy question, but have you tried holding down the power button till the lights on the bottom flash approx. 12-15 times ? this resets the device, Ive had to do this after many flashes of various things.
Click to expand...
Click to collapse
I was flashing a MOD then after the installation finished, it asked if I wanted to "reboot now" so I tapped yes then the phone died and it won't start anymore. Yeah but how long should I hold the button? Just to clarify, my phone only vibrates if I hold the power button for a long time. It just keeps vibrating and vibrating

The Android Manual said:
I was flashing a MOD then after the installation finished, it asked if I wanted to "reboot now" so I tapped yes then the phone died and it won't start anymore. Yeah but how long should I hold the button?
Click to expand...
Click to collapse
until the lights stop flashing, usually about 12 or 15 times cant quite remember exactly how many times they flash but its quite a few.
I know you said you tried the bright light trick, but you should also try this trick whilst holding down the power button.

Seanie280672 said:
until the lights stop flashing, usually about 12 or 15 times cant quite remember exactly how many times they flash but its quite a few.
I know you said you tried the bright light trick, but you should also try this trick whilst holding down the power button.
Click to expand...
Click to collapse
Umm...but the buttons don't light up when I press the power button for a long time.

It does this but when I unplug it, it freezes like that with the LED on.

Edit: When I plug it in the computer it doesn't show up (I think that's good because it's a sign telling me that maybe the phone just needs a long ass charge). Now I will be leaving my phone to charge over night and hope that it will boot up in the morning. The phone becomes hot too while it's charging.
Note: I also do not have access to RECOVERY, BOOTLOADER and FASTBOOT.

The Android Manual said:
Edit: When I plug it in the computer it doesn't show up (I think that's good because it's a sign telling me that maybe the phone just needs a long ass charge). Now I will be leaving my phone to charge over night and hope that it will boot up in the morning. The phone becomes hot too while it's charging.
Note: I also do not have access to RECOVERY, BOOTLOADER and FASTBOOT.
Click to expand...
Click to collapse
if your phone is in warranty you should go to service centre
This situation is quite confusing
as not accessing bootloader is not good sign

yatindroid said:
if your phone is in warranty you should go to service centre
This situation is quite confusing
as not accessing bootloader is not good sign
Click to expand...
Click to collapse
Oh no...well I will try to search for my old laptop that has USB 2.0 ports and see of that recognizes my phone. I also do not have warranty anymore though so that is not going to help me

yatindroid said:
if your phone is in warranty you should go to service centre
This situation is quite confusing
as not accessing bootloader is not good sign
Click to expand...
Click to collapse
Okay so I plugged my phone into a laptop with USB 2.0 ports and it showed up in device manager as an "Unknown device". Not sure if it was caused by the phone showing the battery charging screen but anyway that happened. Is that a sign of life? What should I do about it?

The Android Manual said:
Okay so I plugged my phone into a laptop with USB 2.0 ports and it showed up in device manager as an "Unknown device". Not sure if it was caused by the phone showing the battery charging screen but anyway that happened. Is that a sign of life? What should I do about it?
Click to expand...
Click to collapse
Well as you have tried everything else, and now seeing some signs of life, you could give this a try, no harm in trying, it will either work or it wont.
sorry wrong link, this: http://forum.xda-developers.com/showthread.php?t=2770684

Seanie280672 said:
Well as you have tried everything else, and now seeing some signs of life, you could give this a try, no harm in trying, it will either work or it wont.
sorry wrong link, this: http://forum.xda-developers.com/showthread.php?t=2770684
Click to expand...
Click to collapse
What version of ubuntu do you recommend I use? I will be installing it on my flash drive so...

[Honor 4X] My phone will not turn on and the red led blinking.

Hi guys, I have the Honor 4X, and today when I wanted to turn it on, nothing happened. When I click the power button is flashing only red light led. I read on the internet that you have to remove the batteries but this model can not do that. The phone does not respond to the charge and any key combination also does nothing. You know how to fix it?
**Sorry for my english ;/

Perzot said:
Hi guys, I have the Honor 4X, and today when I wanted to turn it on, nothing happened. When I click the power button is flashing only red light led. I read on the internet that you have to remove the batteries but this model can not do that. The phone does not respond to the charge and any key combination also does nothing. You know how to fix it?
**Sorry for my english ;/
Click to expand...
Click to collapse
What did you do before this happened?

Perzot said:
Hi guys, I have the Honor 4X, and today when I wanted to turn it on, nothing happened. When I click the power button is flashing only red light led. I read on the internet that you have to remove the batteries but this model can not do that. The phone does not respond to the charge and any key combination also does nothing. You know how to fix it?
**Sorry for my english ;/
Click to expand...
Click to collapse
Service center is your best bet...

looks like the battery might be out of charge for flashing red light, so the charging port could be broken and your phone died

any thing else u done before this happens ? otherwise might ur battery died !

Romiui said:
any thing else u done before this happens ? otherwise might ur battery died !
Click to expand...
Click to collapse
If the battery is dead, the led would not light up.

it flashes red when low battery before shutting the phone. also the battery will have a little charge anyways

im having a red led light and shows a empty battery icon when i turn it on what to do guys help me.
sorry for my bad english. if i connect to charging port it shows honor powered by android and turns off and again shows and turns off by itself. it shows for 2 seconds and does like that.

[Q] Totally DEAD Mi Mix

Oddest thing. I was in my car using my Mi Mix for GPS and had it charging while in use. I came to a point where it was fully charged and didn't need to use the navigation anymore so I long pressed power (Epic ROM) and then chose the SHUTDOWN option. Little while later I get home and go to power on my phone and nothing. Nothing at all. Tried long pressing power for over 20 seconds nothing. Tried with VOL UP. Nothing. Tried with VOL DOWN nothing. Tried using a wall charger to see if anything would light up. Nothing. Tried connecting to a computer nothing.
The phone has ZERO damage. Mint condition. For the life of me I have no idea WTF happened to this phone!

Was it hot?, I had this incident happening to mi today, I took a little trip around town and when I got home the phone was off for some reason, I did try to turn it on by pressing the power button a few times and nothing but then it turn on. That was weird, first and I hope the last time.

On my PC I ran the MiFlash tool. The phone does show up on the list when I hit REFRESH but when I try to flash the stock Chinese firmware it fails. It says something to the effect that it can't connect. I get a red error message after a few seconds

SantinoInc said:
On my PC I ran the MiFlash tool. The phone does show up on the list when I hit REFRESH but when I try to flash the stock Chinese firmware it fails. It says something to the effect that it can't connect. I get a red error message after a few seconds
Click to expand...
Click to collapse
Wonder if it has triggered some safety feature because of heat, put it somewhere really cool for a while and try again.

jazz452 said:
Wonder if it has triggered some safety feature because of heat, put it somewhere really cool for a while and try again.
Click to expand...
Click to collapse
You mentioned in the other thread about disconnecting the power supply. I haven't been able to find any tutorial on how to do that. Have you come across something like that?

SantinoInc said:
You mentioned in the other thread about disconnecting the power supply. I haven't been able to find any tutorial on how to do that. Have you come across something like that?
Click to expand...
Click to collapse
Looking really easy

jazz452 said:
Looking really easy
Click to expand...
Click to collapse
I now notice that when I plug the charger in I'm getting a red flashing led light (right above the charging port) Does anyone know what that means?

SantinoInc said:
I now notice that when I plug the charger in I'm getting a red flashing led light (right above the charging port) Does anyone know what that means?
Click to expand...
Click to collapse
So you unplugged the connector? Might need a "deep flash cable" might be another way try plugging in pc without battery connected. Then see if miflash recognise it

SantinoInc said:
I now notice that when I plug the charger in I'm getting a red flashing led light (right above the charging port) Does anyone know what that means?
Click to expand...
Click to collapse
Led it's red flashing in power-off mode when battery it's too discharged.
I've had a similar problem.
I've completely discharged the smartphone to test its capacity.
In power-off mode, I've tried to charge the battery with a non original battery charger; result: red flashing for, about, 10-15 minutes.
After this period, I could turn on the smartphone.
With stock Xiaomi battery charger, this problem doesn't appear, because of Qualcomm Quick Charge 3.0, that can charge rapidly the Mi Mix's big battery.
Are you sure your battery is fully charged? And your battery charger works well?

SantinoInc said:
I now notice that when I plug the charger in I'm getting a red flashing led light (right above the charging port) Does anyone know what that means?
Click to expand...
Click to collapse
It means it's flat or faulty battery, tried a different cable and charger, left it over night, battery can die without good reason.