MCU or SOM bricked.. how to know? - MTCD Android Head Units General

Hi everyone, there are a lot of guides on this forum to solve a brick HU. But I can figure out what is really my problem.
I have a PK5 Rev4 and I suppose is a KLD unit from Eonon. No power on, just a blink on buttons and any more. No SDboot reaction, no SOM OTG reaction, and no voltage over SOM pins from MCU.
I try several guides, but cant figure out if my HU has a MCU bricked or a SOM bricked or another problem...
Is there some way to determine which is my problem before apply a flash method??
Thanks in advance

Your post doesn't mention if you've used a schematic and first checked the unit power supplies. If the MCU has always on 3.3v and sends a power on signal to the SOM +5 supply, then MCU is probably OK.
You could also try removing SOM and manually triggering SOM+5 to check via a resistor.
If stuck with any of this advice, suggest talking with a local expert to walk you through.

marchnz said:
Your post doesn't mention if you've used a schematic and first checked the unit power supplies. If the MCU has always on 3.3v and sends a power on signal to the SOM +5 supply, then MCU is probably OK.
You could also try removing SOM and manually triggering SOM+5 to check via a resistor.
If stuck with any of this advice, suggest talking with a local expert to walk you through.
Click to expand...
Click to collapse
Well, I didnt check unit power supply on MCU because I cant found my MCU model with presicion. Now Im on the way to try to flash MCU with this method https://forum.xda-developers.com/android-auto/mtcd-android-head-units-general/guide-how-to-unlock-bricked-mcu-units-t3748646
Is a possibility that MCU are bricked and dont supply any voltage to SOM? Thats my point. I get today a ST-LINK/V2 programmer to try flash it.
Suddenly I didnt have success with your method of flashing SOM OTG outside of MCU, but I can confirm that SOM dont get any voltage from MCU when 12v is apply. I saw schematics from your signature here, and cant realise what to test..
Look for an expert is a must I think, but before that I would try my last with flashing MCU.
Thanks @marchnz

Ok, what that means?? I cant make mcu flash with my st link cose I use winxp and drivers and app doesn’t work, so I put my hand to meassure voltages and something change. Can somebody explain that state??
If I put SOM in place, display go off, VCC pin 1 of som get 1.4volts and a tinny sound like frying come up. If I put SOM like picture, frying stops, I get 5volts on pin 1 of SOM and display become active.
My HU has recovered the ability to turn on and off, as well as flash 3 times with a long press of the power button. but thats all..

polgoz said:
Ok, what that means?? I cant make mcu flash with my st link cose I use winxp and drivers and app doesn’t work, so I put my hand to meassure voltages and something change. Can somebody explain that state??
If I put SOM in place, display go off, VCC pin 1 of som get 1.4volts and a tinny sound like frying come up. If I put SOM like picture, frying stops, I get 5volts on pin 1 of SOM and display become active.
My HU has recovered the ability to turn on and off, as well as flash 3 times with a long press of the power button. but thats all..
Click to expand...
Click to collapse
Might be defective SOM, dragging +5v supply down or a defective +5v supply. From your description, sounds like the MCU is OK.
You could try connecting the SOM to a bench supply with current limiting/ammeter to validate but more likely that the SOM is defective.

marchnz said:
Your post doesn't mention if you've used a schematic and first checked the unit power supplies. If the MCU has always on 3.3v and sends a power on signal to the SOM +5 supply, then MCU is probably OK.
You could also try removing SOM and manually triggering SOM+5 to check via a resistor.
If stuck with any of this advice, suggest talking with a local expert to walk you through.
Click to expand...
Click to collapse
marchnz said:
Might be defective SOM, dragging +5v supply down or a defective +5v supply. From your description, sounds like the MCU is OK.
You could try connecting the SOM to a bench supply with current limiting/ammeter to validate but more likely that the SOM is defective.
Click to expand...
Click to collapse
Thanks @marchnz. MID SOLVED!
Still trying and discover that if I put a heavy pressure over the MCU on SOM pins zone (zone not identified) HU power up without problem.
Fraying sound was reduced but not eliminated.
Isn't a software or brick problem. Is a internal contact in the MCU, cose I check contacts and nothing look on bad solder.. so my last chance is to try install a prothesis to pull down the zone and still in place.
Any idea?

@marchnz
Well I f..ked up. All was ok till I decide to go to android 8. First, I update android 6 ok, I update MCU to last version for my KLD ok, all was fine.. so I decide to go to Android 8. WRONG!..
I was follow the the kumarai video and stuck after ERASE display. No more reaction after that boot.
I cant get into recovery page, (note that I cant goin into recovery before this event... ) so, whats the problem? how can I recover the recovery state? OTG?...
Please help..
regards
Pol

polgoz said:
@marchnz
Well I f..ked up. All was ok till I decide to go to android 8. First, I update android 6 ok, I update MCU to last version for my KLD ok, all was fine.. so I decide to go to Android 8. WRONG!..
I was follow the the kumarai video and stuck after ERASE display. No more reaction after that boot.
I cant get into recovery page, (note that I cant goin into recovery before this event... ) so, whats the problem? how can I recover the recovery state? OTG?...
Please help..
regards
Pol
Click to expand...
Click to collapse
Otg
Enviado desde mi SM-G950F mediante Tapatalk

ikerg said:
Otg
Enviado desde mi SM-G950F mediante Tapatalk
Click to expand...
Click to collapse
OTG succes! I got Android 8 from SVA now. But I had to made some magic with the MCU board. I has some internal path with problems of contact related with display and touch sensitive pad. I solved it with little sticks of cork under the motherboard. but times to times fails... I thinking on put it in the oven...

polgoz said:
@marchnz
Well I f..ked up. All was ok till I decide to go to android 8. First, I update android 6 ok, I update MCU to last version for my KLD ok, all was fine.. so I decide to go to Android 8. WRONG!..
I was follow the the kumarai video and stuck after ERASE display. No more reaction after that boot.
I cant get into recovery page, (note that I cant goin into recovery before this event... ) so, whats the problem? how can I recover the recovery state? OTG?...
Please help..
regards
Pol
Click to expand...
Click to collapse
Hi polgoz, I seem to have same problem as you on KLD Eonon after go to 8.0 from 6.01. That is: no more reaction after that last boot. Get blank/black screen but when Hold Power button 9 secs it works to flash LEDs only-nothing else.. I cant get into recovery page too so, blank screen was your problem after Hold Power/Flash LED was your issue too?
I see you use this method here:
https://forum.xda-developers.com/an...px3-5-headunit-mod-recover-flash-som-t3766892
Any specific tips if no Win 10 but only Win 7 or XP?
Please help fellow KLD-Eonon owner
Thanks polgoz

hapoll said:
Hi polgoz, I seem to have same problem as you on KLD Eonon after go to 8.0 from 6.01. That is: no more reaction after that last boot. Get blank/black screen but when Hold Power button 9 secs it works to flash LEDs only-nothing else.. I cant get into recovery page too so, blank screen was your problem after Hold Power/Flash LED was your issue too?
I see you use this method here:
https://forum.xda-developers.com/an...px3-5-headunit-mod-recover-flash-som-t3766892
Any specific tips if no Win 10 but only Win 7 or XP?
Please help fellow KLD-Eonon owner
Thanks polgoz
Click to expand...
Click to collapse
Hi mate, I solve the black screen problem doing the SOM flashing with the Marchnz method from the link that you point. But before try to flash som, repeat the sd method with the first sd step, maybe this help.
I didnt flash SOM on XP.. I was able to only on Win10 I dont know why..
Hope this help.
Regards

Related

HTC Touch Pro2 T7373 DEAD Please Help

Dear all,
I got brand new HTC Touch Pro2 T7373 that is not locked.
The phone is DEAD and does not boot.
I tried vol+ and pressing power on.
The phone green led goes on.. and stays like that forever.
How is the recovery procedure?
I have done recovery procedure on my old HTC P3300 several times, but with this one, no success. Any help? Thanks in advance. (also I need original rom with english language if it is possible, please post a link.) Thanks again.
You ****ed it up. YOu tried a hardspl from a different device... BAD IDEA!! Sorry but you're screwed return your Touch Pro 2 to where you bought it from and see if you can get a new one but otherwise you're screwed
digitalmk said:
Dear all,
I got brand new HTC Touch Pro2 T7373 that is not locked.
I tried several times to change the firmware from German to WWE, because I do not understand German, but without success.
Then I applied raphael_cdma_vzw_hspl_035.rar because it does not accepted any other wwe firmware that I wanted to put on.
After that, the phone is DEAD and does not boot.
I tried vol+ vol- and reset the same time, and pressing power on.
The phone green led will bo on.. and stays like that forever.
How is the recovery procedure?
I have done recovery procedure on my old HTC P3300 several times, but with this one, no success. Any help? Thanks in advance. (also I need original rom with english language if it is possible, please post a link.) Thanks again
Click to expand...
Click to collapse
you should have PM'd me for language change services.
now, your bootloader is probably dead if voldown+reset didn't work...
maybe the radio bootloader is still alive, but it would be quite difficult to unbrick it (requiring hardware tools) even if so.
You should consult the experts here before you try anything first, that is why we are here.
Dude! this a very expensive phone... handle with caution.
Now your phone.....RIP!.
Dear Cmonex, one question, as I have found, vol up + vol down + reset btn and then press power. Is this the way for entering the emergency mode, or it is something else (like you wrote... vol down + reset ) ???? maybee I do not enter the recovery mode correctly ???
Thanks for quick reply Cmonex , but thanks all also!!!
digitalmk said:
Dear Cmonex, one question, as I have found, vol up + vol down + reset btn and then press power. Is this the way for entering the emergency mode, or it is something else (like you wrote... vol down + reset ) ???? maybee I do not enter the recovery mode correctly ???
Thanks for quick reply Cmonex , but thanks all also!!!
Click to expand...
Click to collapse
As Cmonex wrote,
Hold Vol Down (keep it pressed) and press the reset with the stylus.
This should take you to the tri-colour bootloader screen.
If it doesn't you have bricked your expensive device, the only way to recover is to get a new bootloader loaded via JTag, good luck getting someone to do that for you.
As is always stated here time and time again, read the information carefuly and if you don't understand ask.
Since you flashed a Raphael bootloader or rom or both ???? I'd say it's well and truly an expensive paper weight sir............ on the bright side though, you've learn't an extremely valuable lesson.
READ BEFORE YOU ACT.
Beasty
Dear Beasty,
Thanks for the complete info.
I will try tomorrow morning first thing to enter vol down + reset, and try to upload new firmware. If it does fail, please give me info for Jtag pinouts. I have done until now flashing with jtag interface to satelite receivers, to linksys rooters but never to phones. However, I think that it will be similar because Jtag is Jtag . Please give me info about the Jtag if you have just for me to be prepared for tomorrow fight . Thanks. Regards.
What I want to know is why did the TP2 stock SPL allow digitalmk to flash an unsigned SPL (ie HardSPL)?
Are the SoftSPL hooks that close between the 2 phones?
digitalmk said:
Dear Beasty,
Please give me info about the Jtag if you have just for me to be prepared for tomorrow fight . Thanks. Regards.
Click to expand...
Click to collapse
I dont think any one here knows where the jtag pins are on this phone. You could always strip the phone down and be the first to know where the jtag pins/pads are...
wootty2000 said:
What I want to know is why did the TP2 stock SPL allow digitalmk to flash an unsigned SPL (ie HardSPL)?
Are the SoftSPL hooks that close between the 2 phones?
Click to expand...
Click to collapse
probably just running SSPL bricked it.
(my newer SSPLs have a device model check but the cdma raphael package which he ran didn't have it)
I did something similar with my HTC Tornado a few years ago,
It was a lost cause, and I feel you are going to find the same.
its an expensive lesson to learn
Obviously, technically speaking you have voided your warranty... so you have a few options left:
Send device back to htc and play dumb *** not recomended could be classed as fraud?***
Find the Jtag pin outs and a method of flashing
purchase a new system board from ebay
break down the device and sell the parts on ebay
Cheers
Steve
digitalmk said:
Dear Beasty,
Thanks for the complete info.
I will try tomorrow morning first thing to enter vol down + reset, and try to upload new firmware. If it does fail, please give me info for Jtag pinouts. I have done until now flashing with jtag interface to satelite receivers, to linksys rooters but never to phones. However, I think that it will be similar because Jtag is Jtag . Please give me info about the Jtag if you have just for me to be prepared for tomorrow fight . Thanks. Regards.
Click to expand...
Click to collapse
Sorry I don't know the jtag pinouts and I don't believe anyone else has mapped them out as yet.
Cheers,
Beasty
JTAG not easy probably
I was looking a while back for the Titan JTAG points because I also have used it a lot on other devices and someone sent me one he had killed. What I found by looking around surprised me that there appear to be no JTAG at least not in the Titan that are lined up. Someone on another model did it long ago but looking at taking the processor off the board to get to some pads below to do it, made me give it up.
with vol up + reset + power on, it starts green led
My phone is dead, I tried to hold vol down and press reset, but nothing..
BUT WHEN HOLDING VOL UP + CLICKING ON POWER ON, IT Lights green led (left from speaker) and keeps lighting.
When press reset + anything (vol down + reset ) or anything led goes off and does not start. This tells that it is not completely dead .. but.. where from here ??
Any help from here??
Regards to all
It is pretty much dead unless you can find the JTAG pin outs. No other options aside from getting a new one.
I suggest you return your TP2 and "play dumb"..
Wap in in the microwave for half a second. Frys everything. Play dumb.
digitalmk said:
My phone is dead, I tried to hold vol down and press reset, but nothing..
BUT WHEN HOLDING VOL UP + CLICKING ON POWER ON, IT Lights green led (left from speaker) and keeps lighting.
When press reset + anything (vol down + reset ) or anything led goes off and does not start. This tells that it is not completely dead .. but.. where from here ??
Any help from here??
Regards to all
Click to expand...
Click to collapse
maybe radio bootloader still works but you'd need to build a serial cable to access it and even then it's not an easy ticket to unbricking
hit it with 12+ volts at the battery terminals, should fry everything and it won't look like you stuck it in the microwave. Say "I think there was something wrong with my charger".......
Are you Dutch, digitalmk? I ask because two different Dutch posters bricked their gsm Raphaels this week flashing that same verizon hard spl. It seems weird as hell that so many people are doing that all of a sudden. Where did you get the idea to flash it?
Hi,
My phone became dead too. It worked normaly, but while i was talking he simply turn off. I thought that is empty battery, but he was on charger for few hours. Red light is on ( when charging), when i try to turn it on he vibrate and get to HTC Touch Pro 2 logo with red numbers in right corner and then go again off.
Does anyone know what maybe be a problem?

[Q] HTC Desire DEAD after ROM flashed... need help plz

Hej,
Hopefully you all are fine and good in health...............
Now come to the point actually i had problem with my HTC Desie that was stuck up with its initial screen i mean when i turn on my phone it shows the htc logo then stuck up. Then i tried many times to hard reset but it could not work either, after that i download ROM "RUU_Bravo_Froyo_HTC_WWE_2.29.405.2_Radio_32.49.00 .32U_5.11.05.27_release_151783_signed.exe" and run from my pc (running windows 7) but after 65 % i got error during updating process and the utility shows how to recover it then according to the instructoins what i did is
1. Unplug my phone (dissconnect from pc)
2. Remove battery for 3 sec and plug it again.
3. Turn on the phone
4. Plug the USB (connect phone again)
but on the 3rd step when i plugged the battery it won't turn on neither charge or in short totally dead nothing happened to it .
I am requesting to all of you please please please suggest me what to do now, how can it work, how to turn it on again ............ is it bricked ??? if bricked then how to solve this problem ????.
Waiting for your responses......
Thanks in advance.
Be more specific.
- Can you still acces your recovery?
- If not, do you have a carrier specific rom? If so, download that rom, go into the bootloader, choose fastboot and run the rom. You can try this method also if you don't have a carrier specific rom.
Look here for a rom.
http://www.shipped-roms.com/index.php?category=android&model=Bravo
Lennyz1988 said:
Be more specific.
- Can you still acces your recovery?
- If not, do you have a carrier specific rom? If so, download that rom, go into the bootloader, choose fastboot and run the rom. You can try this method also if you don't have a carrier specific rom.
Look here for a rom.
http://www.shipped-roms.com/index.php?category=android&model=Bravo
Click to expand...
Click to collapse
no i don't have any access to recovery, because phone is not turn on how can i run this rom when phone is not connected or not power on........
by the way thanks for your suggestion.....
Hej,
After long discussion with HTC customer service and trying to convince them that the phone is not in water or in any wet place but they said that they found my phone or take my phone as liquid damage so my phone is out of warranty .
As they said that it has symptoms of liquid damage which turn white color of sticker into red/pink color. I even don't no how come but any how leave this.
Come to point, what can i do now my phone won't start i opened it disassemble then assemble everything but it won't power on even not charge ............
i am still stuck up with it even no idea what to do more
Need some suggestions can i order its flex cable or board or other stuff or what to do ??? how to power it on ???
Waiting for your response.
Thanks in advance.
arif01 said:
As they said that it has symptoms of liquid damage which turn white color of sticker into red/pink color. I even don't no how come but any how leave this.
Click to expand...
Click to collapse
Sorry, no idea for your original problem, but some small explanation where your so called water damage may come from. A friend of mine once had the same problem with a camera. The stickers can change color because of air-moisture. Especially if you carry the phone in your pocket and it is hot, your sweat leads to damp air in you pocket and affects those stickers.
I would try to argue with the htc support that it is not ok that keeping your cell phone in your pocket leads to a water damage. Perhaps they give in.
I wish you good luck with your phone.
mblaster
€: Here some link to back up my argumentation: http://www.wisegeek.com/what-is-a-water-damage-sticker.htm
You could try this...
arif01 said:
no i don't have any access to recovery, because phone is not turn on how can i run this rom when phone is not connected or not power on........
by the way thanks for your suggestion.....
Click to expand...
Click to collapse
You're problem sounds pretty similar to mine that I managed to solve. See my thread... http://forum.xda-developers.com/showthread.php?t=927702 (post #5).
Hope this helps.
Rich
babblerx said:
You're problem sounds pretty similar to mine that I managed to solve. See my thread... http://forum.xda-developers.com/showthread.php?t=927702 (post #5).
Hope this helps.
Rich
Click to expand...
Click to collapse
Thanks bro but the problem is my phone is not turn on , no power , no usb detection. Today i installed skd and used adb shell command but it says device not found what can i do more i dont understand
Please suggest me my friends.
Thanks in advance.

LG G4 H810 Doesn't power up

Hello there, First of all i am new here, This is my first post here... well let's continue with my problem.
I bought a LG G4 about 1 month ago, everything was going perfectly, but 2 days ago it start to install a new android version on the phone, it says a new update was there, so i tried to download it... Everything goes ok and then my phone start with problems, i can't unistall any app because my phone restart, can't do a password because it close, can't use my phone like always...
So i tried to downgrade my phone to a previous android version, i tried this method: http://forum.xda-developers.com/g4/general/guide-lg-g4-stock-firmware-to-stock-kdz-t3107848
I used the kdz method using LG UP, i downloaded the firmware (PR H810PR10a_04.kdz) so i decided to follow the step in the thread mentioned before, everything was ok, it show up 100% and say complete, so i decide to unplug my phone and tried to power up, so what's up? My phone died, i can't make it power up, can't access download mode, can't acess factory reset or anything else, It doesn't power up using power on button, tried to charge and does nothing, PC don't reconigze it...
So maybe i bricked it, Is there any solution to this? As i need help... I am afraid of losing my phone as it was working amazing before.
Thanks you in advance.
moises1012 said:
Hello there, First of all i am new here, This is my first post here... well let's continue with my problem.
I bought a LG G4 about 1 month ago, everything was going perfectly, but 2 days ago it start to install a new android version on the phone, it says a new update was there, so i tried to download it... Everything goes ok and then my phone start with problems, i can't unistall any app because my phone restart, can't do a password because it close, can't use my phone like always...
So i tried to downgrade my phone to a previous android version, i tried this method: http://forum.xda-developers.com/g4/general/guide-lg-g4-stock-firmware-to-stock-kdz-t3107848
I used the kdz method using LG UP, i downloaded the firmware (PR H810PR10a_04.kdz) so i decided to follow the step in the thread mentioned before, everything was ok, it show up 100% and say complete, so i decide to unplug my phone and tried to power up, so what's up? My phone died, i can't make it power up, can't access download mode, can't acess factory reset or anything else, It doesn't power up using power on button, tried to charge and does nothing, PC don't reconigze it...
So maybe i bricked it, Is there any solution to this? As i need help... I am afraid of losing my phone as it was working amazing before.
Thanks you in advance.
Click to expand...
Click to collapse
Anyone can help me please? I really need help with this!
moises1012 said:
Anyone can help me please? I really need help with this!
Click to expand...
Click to collapse
Just give another cable a try. Maybe it's just the charger. Otherwise you may be another victim of the motherboard issue. Which serial? 5xx?
steadfasterX said:
Just give another cable a try. Maybe it's just the charger. Otherwise you may be another victim of the motherboard issue. Which serial? 5xx?
Click to expand...
Click to collapse
Where can i find the serial number? Sorry i am just newbie in this.
About your solution it doesn't work, I have tried diferrent cables chargers and still don't work, It don't make any sign of life, it's dead completely.
Anyone please help me....
moises1012 said:
Where can i find the serial number? Sorry i am just newbie in this.
About your solution it doesn't work, I have tried diferrent cables chargers and still don't work, It don't make any sign of life, it's dead completely.
Click to expand...
Click to collapse
Pull out he battery and you will see the serial. If it starts with 5xx your chances are big that you're another victim of the main board issue.
Check the other threads regarding bootloop and if you wanna recover your data try the freezer or oven method (search for those here)
.
steadfasterX said:
Pull out he battery and you will see the serial. If it starts with 5xx your chances are big that you're another victim of the main board issue.
Check the other threads regarding bootloop and if you wanna recover your data try the freezer or oven method (search for those here)
.
Click to expand...
Click to collapse
No, My serial number don't start with 5, it's 404kxxxxx
Anyways i am going to give those threads a look, thanks you so much.
steadfasterX said:
Pull out he battery and you will see the serial. If it starts with 5xx your chances are big that you're another victim of the main board issue.
Check the other threads regarding bootloop and if you wanna recover your data try the freezer or oven method (search for those here)
.
Click to expand...
Click to collapse
I have read others thread regarding the bootloop issue but it's not my problem... The main problem is my phone is dead... I can't make PC to recognize it, can't put chargers, don't even give any sign of life to power up, LED don't power up... So how can i do any of these methods when i can't make it awake?
Thanks you.
Me too, my phone doesn't turn on anymore, please help
Any solution to this please?
Your phone is proably refurbrished, and it have no all h810 parts inside. So proably it's not H810, and you flashed image for this, that's can be problem. you have to disassembly your phone and check parts.
I buyed it new so it's not refurbrished
Where you bought
Ganjax said:
Where you bought
Click to expand...
Click to collapse
Amazon, I bought it new. I know in amazon are some refurbrished phones but i am sure i bought it new.
moises1012 said:
Amazon, I bought it new. I know in amazon are some refurbrished phones but i am sure i bought it new.
Click to expand...
Click to collapse
Amazon? It's same as aliexpress or even wish
It's an Online shop, I bought it directly of a trusted seller so i am sure it's new... The problem come when it start updating.
LG is having a hard time with dead phones, one of my Nexus 5x just died... It just died and will need to send it to repair.
Enviado desde mi Nexus 5X mediante Tapatalk

Zenfone 2 only boots Android when plugged in a USB.

So I was using my phone normally yesterday, until it shuts down randomly while using the camera. So I restarted it, but it still restarted as I got to my home screen. So I said to myself that there must be something went wrong in the rom that I am using (which is LOS 14.1), but I've got a backup before **** happened, not to worry, after I restored it though, IT STILL RESTARTED, but the weird part is, It doesn't restart if it is charging. So I wondered maybe the battery has given up, but in the TWRP, it doesn't restart even unplugged?
Things that I had tried:
1. Tried a new rom (this time using BORETS ROM), still restarts when unplugged.
2. Ran the backup again, still no change.
3.Drained my battery in TWRP, charged it up to 100%, still restarts.
Also, when I boot up my phone without a USB cable plugged in, It restarts when loading the main rom (the rom's splash screen, not the main splash screen), PLEASE HELP ME.
Xnin47 said:
So I was using my phone normally yesterday, until it shuts down randomly while using the camera. So I restarted it, but it still restarted as I got to my home screen. So I said to myself that there must be something went wrong in the rom that I am using (which is LOS 14.1), but I've got a backup before **** happened, not to worry, after I restored it though, IT STILL RESTARTED, but the weird part is, It doesn't restart if it is charging. So I wondered maybe the battery has given up, but in the TWRP, it doesn't restart even unplugged?
Things that I had tried:
1. Tried a new rom (this time using BORETS ROM), still restarts when unplugged.
2. Ran the backup again, still no change.
3.Drained my battery in TWRP, charged it up to 100%, still restarts.
Also, when I boot up my phone without a USB cable plugged in, It restarts when loading the main rom (the rom's splash screen, not the main splash screen), PLEASE HELP ME.
Click to expand...
Click to collapse
Hello ..a few questions.
What phone is it ?
What number TWRP do you have ? 3.0.X.X
X= ?
timbernot said:
Hello ..a few questions.
What phone is it ?
What number TWRP do you have ? 3.0.X.X
X= ?
Click to expand...
Click to collapse
It's a ZE551ML and I currently have returned to stock boot loader and recovery image, but the time that it happened I was on TWRP 3.0.3-M4. Why'd you ask?
Xnin47 said:
It's a ZE551ML and I currently have returned to stock boot loader and recovery image, but the time that it happened I was on TWRP 3.0.3-M4. Why'd you ask?
Click to expand...
Click to collapse
Thought you might have older TWRP - no worries
Alls OK now then ?
If it is ? Put **[ solved ]** in title :good:
timbernot said:
Thought you might have older TWRP - no worries
Alls OK now then ?
If it is ? Put **[ solved ]** in title :good:
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Unfortunately, No it's still not okay.
Xnin47 said:
Unfortunately, No it's still not okay.
Click to expand...
Click to collapse
Have you got IFWI version 0094.0183 in bootloader and M stock recovery ?
If you have , you can use my downgrade from M to LP via SD card from my signature below
If, when back in LP .196 -- You still have the same problem , you will be looking at an hardware and not software problem :good:
https://forum.xda-developers.com/zenfone2/help/success-downgrade-mm-to-lp-via-sd-card-t3520642
timbernot said:
Have you got IFWI version 0094.0183 in bootloader and M stock recovery ?
If you have , you can use my downgrade from M to LP via SD card from my signature below
If, when back in LP .196 -- You still have the same problem , you will be looking at an hardware and not software problem :good:
https://forum.xda-developers.com/zenfone2/help/success-downgrade-mm-to-lp-via-sd-card-t3520642
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Click to collapse
Today I flashed 2.15.40.13 on raw using Asus Flash Tool, still no luck , I guess it's a hardware problem huh?
Xnin47 said:
Today I flashed 2.15.40.13 on raw using Asus Flash Tool, still no luck , I guess it's a hardware problem huh?
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Click to collapse
Seems like you didn't need any help.
timbernot said:
Seems like you didn't need any help.
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Click to collapse
The problem just seems very weird to be a hardware problem , So, again, after charging my phone up to 100 percent, booted it up to Android and then unplugged it, and I had about a minute of activity now before it shuts down. Again in recovery or boot loader, it never shuts down.
Do me a favour , test with cable attached to phone but detached from charger to rule out USB socket , cable etc:good:
timbernot said:
Do me a favour , test with cable attached to phone but detached from charger to rule out USB socket , cable etc:good:
Click to expand...
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Tried it now, still shuts down.
Xnin47 said:
Tried it now, still shuts down.
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If its out of warranty , i would first check all connections inside phone ,
it could be battery
it could be main board or usb board.
If it were battery though , it should shut down connected to lower amp pc usb2.
Not much you can do really apart from above, usb boards are cheap`sh to buy, maybe worth the gamble ? Obviously if connections dont fix before ditching if main board. Try a discon of all connections and reconnect before ditching
I have the EXACTLY same problem.
Did you solved?
Guys, I know it's been a long time this question was asked, but I'm having the exact same problem since a week.
@owenreilly @Xnin47 any luck on solving it?
Thanks a lot!
neves4 said:
Guys, I know it's been a long time this question was asked, but I'm having the exact same problem since a week.
@owenreilly @Xnin47 any luck on solving it?
Thanks a lot!
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Click to collapse
Wow this is an old problem. Nope, I didn't fix it, instead I was back on my Galaxy Alpha until I moved on to newer phones. I believe the problem though was the battery, so if you want, you can replace that. Sorry for the late reply bro!
Xnin47 said:
Wow this is an old problem. Nope, I didn't fix it, instead I was back on my Galaxy Alpha until I moved on to newer phones. I believe the problem though was the battery, so if you want, you can replace that. Sorry for the late reply bro!
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Click to collapse
Hey dude! I've replaced my battery 3 weeks ago based on a Brazilian forum and it was, indeed, the culprit haha. Now everything is back on track again.
Thanks a lot for the answer

Loaded MCU file - now unit unresponsive

My unit is a PbA ES7815, which I believe is identical to an Erisin ES7815. The original MCU was MTCE_LM_V2.88, which I upgraded to MTCE_LM_V3.01c without a problem. I recently saw MTCE_LM_V3.30 was available on Yandis so I downloaded it and did an MCU upgrade.
The result was a blank screen. I can't boot into recovery with the reset button and on a long press of the on/off switch I get a LED flash, but that is all I can get it to do.
How can I recover back to MTCE_LM_V3.01c? Sorry if this is something I should be able to find..
andychapman said:
My unit is a PbA ES7815, which I believe is identical to an Erisin ES7815. The original MCU was MTCE_LM_V2.88, which I upgraded to MTCE_LM_V3.01c without a problem. I recently saw MTCE_LM_V3.30 was available on Yandis so I downloaded it and did an MCU upgrade.
The result was a blank screen. I can't boot into recovery with the reset button and on a long press of the on/off switch I get a LED flash, but that is all I can get it to do.
How can I recover back to MTCE_LM_V3.01c? Sorry if this is something I should be able to find..
Click to expand...
Click to collapse
Hi, you will need to upload older firmware via ST-link. There is some tutorials on the internet, search for "PX5 bricked MCU fix".

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