Hi everyone- I have searched and have looked everywhere. I just wanted to get someone's thoughts on how I could get my phone back to stock. My mini-USB port on my phone is damaged- I can't charge it unless powered off and it can't connect to my PC. Trust me I've tried multiple cables, have the drivers installed on my PC, and its not my USB ports on my PC. Since I can't connect via USB to my laptop I can't use ToolKits that are available
My phone is currently rooted and has a Unlocked bootloader. Are these the steps I will need to go through to bring back to stock so I can return to Verizon?
1. Flash Verizon stock ROM through CWM Recovery. Rom is found here:
"[ROM] mROM v2.0 JellyBean 4.1.2 JZO54K for Verizon - stock, rooted + MODs"
(http://forum.xda-developers.com/showthread.php?t=1763823)
2. On Google Play I downloaded Segv's tool ("BootUnlocker for Galaxy Nexus") to Lock Bootloader
3. On Google Play I downloaded "Android Root Toolkit" to flash Stock Recovery.
4. Un-install app "SuperSU" and "Superuser"
Does this process look right? Any help would be appreciated!!!
FYI I did look at the following (http://forum.xda-developers.com/showpost.php?p=27945515&postcount=128) but nobody has commented on it to verify it works.
UPDATE: In my last attempt I used the pliers and squeezed the micro-USB end and my laptop recognized it!!! I swear I did it before but i guess i didn't squeeze enough. Now that my laptop recognized it and was able to use the toolkit and bring back to stock and locked bootloader.
I am having the exact same issues you are. Looking forward to an answer
I had the same problem and had followed all your steps, various cables ect... try squeezing one of the mini USB cables a little with pliers! So the little gap is a little hard to push on to the phone. This worked for me!
Sent from my Galaxy Nexus
I think I saw a post where you mentioned you did that and it worked for you. I tried squeezing a cable end already :-/ no dice
UPDATE: In my last attempt I used the pliers and squeezed the micro-USB end and my laptop recognized it!!! I swear I did it before but i guess i didn't squeeze enough. Now that my laptop recognized it and was able to use the toolkit and bring back to stock and locked bootloader.
PLeM3Boosted said:
UPDATE: In my last attempt I used the pliers and squeezed the micro-USB end and my laptop recognized it!!! I swear I did it before but i guess i didn't squeeze enough. Now that my laptop recognized it and was able to use the toolkit and bring back to stock and locked bootloader.
Click to expand...
Click to collapse
Be careful when you are doing dev stuff with a spotty USB connection. If it loses connection at a bad time (which anytime is always a bad time), you could end up with a brick.
I would also try cleaning out the USB port with a sharpened toothpick. I read this on Lifehacker, and they said it gives a much better connection.
Disclaimer: I'm not responsible for anything that happens to you or your phone.
PLeM3Boosted said:
UPDATE: In my last attempt I used the pliers and squeezed the micro-USB end and my laptop recognized it!!! I swear I did it before but i guess i didn't squeeze enough. Now that my laptop recognized it and was able to use the toolkit and bring back to stock and locked bootloader.
Click to expand...
Click to collapse
Glad it worked for you!
Sent from my Galaxy Nexus
Next time remove battery, clean usb port with alcohol and tooth brush, let it dry and reboot. Micro USB ports are not up to what they are being used for. Stupid Samsung. I don't think I've had a smartphone in the last 4 years that's lasted a year without something breaking .
Not a fix for your micro-usb not working.....but you can download airdroid from the play store and transfer files from your laptop to your phone and visa-versa. Its a free app and works just fine for me transferring files when i don't have a USB cable on hand
Sent from my Galaxy Nexus
suwu10 said:
Not a fix for your micro-usb not working.....but you can download airdroid from the play store and transfer files from your laptop to your phone and visa-versa. Its a free app and works just fine for me transferring files when i don't have a USB cable on hand
Sent from my Galaxy Nexus
Click to expand...
Click to collapse
I believe dropbox serves the same purpose and is arguably easier to use.
Update: Went to Verizon last Friday and they didn't even check to see if my bootloader was locked. The person didn't even check much other than seeing if my phone charged (which it didn't). I did have the extra service warranty so he just had a new one sent to my house and didn't give me any grief.
Looking to unlock, root, and flash a ROM tonight
Hi, all...
Quick question: did somebody in this forum ever had problems with USB? Mine seems to work only for charging. 'Till the last week, it worked as MSC, with no major problems, then it became faulty, disconnecting and connecting.
Now, to have data connection, is necessary to put pressure at the male connector and hold it this way. I think that it'll require a new PCB, as it doesn't look like software failure. I've googled up and there were other people having trouble with Xperia, but not M, specifically.
So, must I bring it to the assistence?
There's only one way to find out where the source of the problem is: to reflash the ROM.
The USB connector might have got damaged somehow. You can try it with any other device or maybe another xperia m to check for software fault or damage of the USB connector. Try to keep your device at a level below the port for USB in your computer.
elmkzgirxp said:
There's only one way to find out where the source of the problem is: to reflash the ROM.
Click to expand...
Click to collapse
Tried with CM 4.4 (FXP one, that's, by the way, terrifc). But it presented the same failure, then I reverted to the stock 4.3's CWM backup, because I didn't want to reinstall every app. Well, at least I,'m now sure that's a hardware failure.
cooldudeachyut said:
The USB connector might have got damaged somehow. You can try it with any other device or maybe another xperia m to check for software fault or damage of the USB connector. Try to keep your device at a level below the port for USB in your computer.
Click to expand...
Click to collapse
Tried everything (or near everything). It charges, however. There are a little failure, but it should work if the phone is left quiet or not shaken while using it connected to the outlet.
So, for now, I'm going to transfer things using Samba or detached SD (the last being the fastest). Later I'll send it for repair... Shame it perhaps won't work with OTG (a feature I've been searching for, when I bought XM), but, when having money, I'm going to get it fixed.
Thanks for the replies, anyway.
prppedro said:
Tried with CM 4.4 (FXP one, that's, by the way, terrifc). But it presented the same failure, then I reverted to the stock 4.3's CWM backup, because I didn't want to reinstall every app. Well, at least I,'m now sure that's a hardware failure.
Tried everything (or near everything). It charges, however. There are a little failure, but it should work if the phone is left quiet or not shaken while using it connected to the outlet.
So, for now, I'm going to transfer things using Samba or detached SD (the last being the fastest). Later I'll send it for repair... Shame it perhaps won't work with OTG (a feature I've been searching for, when I bought XM), but, when having money, I'm going to get it fixed.
Thanks for the replies, anyway.
Click to expand...
Click to collapse
Most problems don't get fixed just by restoring /system. You have to flash the whole
ROM, if it failed with system. If you're worried so much about your data, then just backup /data then restore it afterwards...
I also have this problem.i just elevates the charger cable and its charging but its not working if its not elevated.tried different charger but the problem still persist.so i conclude that its the port in the phone that s malfunctioning.
Sent from my C1905 using XDA Premium 4 mobile app
even my usb cable didn't work. I tried connecting other mobiles too but dint work. And i realized its not problem with the os, but the cable itself was fault!
Hello to all. I am emperiencing a number of problems on my deb. Some are listed below. These problems were not experienced in the first 3 months:
1) THE BATTERY
I cannot use the tablet while charging. It does not charge i.e. It needs to be in a specific position to charge.
Also, I am experiencing Huge Battery Drain. It charges 5-15% in 2:30 hours. This happened after I used the PA 4.5 beta 1(Using MultiROM. This stayed even after I deleted the ROM And reverted back to stock.
2) THE SIM CARD
I don't know when it happened but the sim was working fine before. I didn't use the sim very often except for validating whatsapp. But as I tried to validate, no messages arrived at my nexus. I thought that the sim had become defective. But it worked just fine in other phones!
I even contacted Asus about this but they asked me to first factory reset it. I decided it was too big a deal and did not.
3)THE OTG CABLE
My Nexus recognized the otg usb drive at first. When I tried to use it again, It just wouldn't recognize it. Tried using a mouse too (had worked before). Did not work. Tried on different roms. Nope.
4) USB COMPUTER CONNECTIONS
I had used it before to copy files from my laptop to my nexus. It worked fine. After some time, I tried to do it again, the pc would recognize it sometimes say it was unknown sometimes say it was Nexus 7 but wouldn't install drivers. Tried using Wug's to no avail.
Today, I tried using it on my other pc. The drivers installed just fine, but there was no sign of it in My Computers. In Wug's, the device was able to operate fully! It tried using various backup commands, and they worked! But the push/pull command did not work. Though that turned out to be a problem of the toolkit as I pulled the files I need with ADB PULL command in cmd.
So, as some of these problems are hardware related, I am thinking of giving it back to Asus. I am rooted and performing The Wug's Flash Stock +Unroot Option Now. Please if you have any advice, post it here.
THANKS IN ADVANCE.
-----------------------------------------------------------
Don't Say Thanks.
Press The Thanks Button.
DEVICE:
Nexus 7 2013 LTE (DEB)
Stock 4.4.3 KUT84L
Stock Kernel
aniket0317 said:
Hello to all. I am emperiencing a number of problems on my deb. Some are listed below. These problems were not experienced in the first 3 months:
1) THE BATTERY
I cannot use the tablet while charging. It does not charge i.e. It needs to be in a specific position to charge.
Also, I am experiencing Huge Battery Drain. It charges 5-15% in 2:30 hours. This happened after I used the PA 4.5 beta 1(Using MultiROM. This stayed even after I deleted the ROM And reverted back to stock.
2) THE SIM CARD
I don't know when it happened but the sim was working fine before. I didn't use the sim very often except for validating whatsapp. But as I tried to validate, no messages arrived at my nexus. I thought that the sim had become defective. But it worked just fine in other phones!
I even contacted Asus about this but they asked me to first factory reset it. I decided it was too big a deal and did not.
3)THE OTG CABLE
My Nexus recognized the otg usb drive at first. When I tried to use it again, It just wouldn't recognize it. Tried using a mouse too (had worked before). Did not work. Tried on different roms. Nope.
4) USB COMPUTER CONNECTIONS
I had used it before to copy files from my laptop to my nexus. It worked fine. After some time, I tried to do it again, the pc would recognize it sometimes say it was unknown sometimes say it was Nexus 7 but wouldn't install drivers. Tried using Wug's to no avail.
Today, I tried using it on my other pc. The drivers installed just fine, but there was no sign of it in My Computers. In Wug's, the device was able to operate fully! It tried using various backup commands, and they worked! But the push/pull command did not work. Though that turned out to be a problem of the toolkit as I pulled the files I need with ADB PULL command in cmd.
So, as some of these problems are hardware related, I am thinking of giving it back to Asus. I am rooted and performing The Wug's Flash Stock +Unroot Option Now. Please if you have any advice, post it here.
THANKS IN ADVANCE.
-----------------------------------------------------------
Don't Say Thanks.
Press The Thanks Button.
DEVICE:
Nexus 7 2013 LTE (DEB)
Stock 4.4.3 KUT84L
Stock Kernel
Click to expand...
Click to collapse
Judging from the symptoms, you likely have a bad usb port. I wouldn't say the cable since your otg cable yielded the same result. According to some, it's really fragile when you handle it rough. The port is soldered to the I/O board so either you (1) try to bend back the inside pins; or (2) replace it if you're skillful enough with your iron; or (3) replace the board (ouch!). It's a shame if you have to choose (3) since that means throwing the board away for just one bad component. Litter.
1) The inside pin is fine. The cable just seems really loose. Though the other cables have the same effect.
2)I dont have the skill.
3)Why should I waste any money if It is under warranty?
And usb otg should come at least once, as the tab does charge once maintained in a specific condition.
And As the tablet charges when its connected to a pc, its not a problem of bad usb port
-----------------------------------------------------------l
Don't Say Thanks.
Press The Thanks Button.
DEVICE:
Nexus 7 2013 LTE (DEB)
Stock 4.4.3 KUT84L
Stock Kernel
aniket0317 said:
1) The inside pin is fine. The cable just seems really loose. Though the ot her cables have the same effect.
2)I dont have the skill.
3)Why should I waste any money if It is under warranty?
And usb otg should come at least once, as the tab does charge once maintained in a specific condition.
And As the tablet charges when its connected to a pc, its not a problem of bad usb port
-----------------------------------------------------------l
Don't Say Thanks.
Press The Thanks Button.
DEVICE:
Nexus 7 2013 LTE (DEB)
Stock 4.4.3 KUT84L
Stock Kernel
Click to expand...
Click to collapse
I didn't realize your tab was still under warranty. Nevertheless, the fact that the cables fit loosely suggest that the housing is not in good condition and the pins, in turn, while not damaged, make poor connection (to wit, the tab charged only if held in a certain position). If the tab consistently charges while connected to a PC, then you're right, the fault lies elsewhere, like a jarred battery connector, or the other USB end, or the charger itself. This, however, leaves the OTG issue unexplained. Warranty seems your best bet for the moment, however. Good luck.
I don't think it can be a mistake of mine, so Asus will definitely have to replace it.
Thanks for your support though!
-----------------------------------------------------------
Don't Say Thanks.
Press The Thanks Button.
DEVICE:
Nexus 7 2013 LTE (DEB)
Stock 4.4.3 KUT84L
Stock Kernel
I have two pieces of ZF2 ZE551ML at home. One is my and the other one belongs to my wife. My wife's phone had a broken mini USB port - the first 2 pins from the left were visible - the plastic had broken apart. Firstly, I did not relaise it could be the problem, luckily I managed to change the whole PCB including the broken USB port, however after this change the phone is not being detected by a PC, nor it is fast charging. As I have two phones at home, I checked performance with the other unit and unfortunately, the other one does quick charge and is detected by aPC, so it is not the cable, neither is it the missing software.
I bought another PCB and changed it as well, however still no joy. Does anyone have any brilliant idea how to fix it. I should also say that all other or most of the functions of the phone are working fine (at least those I managed to check: GPS, Wi-Fi, GSM+dual SIM, torch, bluetooth, and so on).
The only problem is that the phone loops on the SMMI Test #1 and is not going any further. I have also tried to detect phone by adb, still no joy. The phone is not rooted!
I have my personal suspects that it could be the faulty main board or a software bug. Any ideas how to fix it?
My phone is running LP 5.0, soft: LRX21V.WW-ASUS_Z00A-2.20.40.198_20160930_8756_user044030427_201501060109, kernel [email protected] #1 Fri Sept 30 15:31>23 CST 2016
Sdcard slot is working?
I would check the connections on both ends of the flex cable with the sim and sd slots on it.
I am having the same problems (because of the busted sd slot). I ordered a new flex cable. When it arrives (approx. 2 weeks) I'll know if that was the cause.
Yes, SD slot is working and both SIMs, so the phone itself works fine, only very long charging and is not detected by a PC.
Mattiii said:
I have two pieces of ZF2 ZE551ML at home. One is my and the other one belongs to my wife. My wife's phone had a broken mini USB port - the first 2 pins from the left were visible - the plastic had broken apart. Firstly, I did not relaise it could be the problem, luckily I managed to change the whole PCB including the broken USB port, however after this change the phone is not being detected by a PC, nor it is fast charging. As I have two phones at home, I checked performance with the other unit and unfortunately, the other one does quick charge and is detected by aPC, so it is not the cable, neither is it the missing software.
I bought another PCB and changed it as well, however still no joy. Does anyone have any brilliant idea how to fix it. I should also say that all other or most of the functions of the phone are working fine (at least those I managed to check: GPS, Wi-Fi, GSM+dual SIM, torch, bluetooth, and so on).
The only problem is that the phone loops on the SMMI Test #1 and is not going any further. I have also tried to detect phone by adb, still no joy. The phone is not rooted!
I have my personal suspects that it could be the faulty main board or a software bug. Any ideas how to fix it?
My phone is running LP 5.0, soft: LRX21V.WW-ASUS_Z00A-2.20.40.198_20160930_8756_user044030427_201501060109, kernel 3.10[email protected] #1 Fri Sept 30 15:31>23 CST 2016
Click to expand...
Click to collapse
may be the pcb you changed is for different version. try replacing it with your other phone if you have the same model. post if works.
sukhwant717 said:
may be the pcb you changed is for different version. try replacing it with your other phone if you have the same model. post if works.
Click to expand...
Click to collapse
Hi, I did changed both PCBs between phones. Firstly, I had the same problem on both phones, then I made better connections and the batteries started to warm up. Finally, the new one works with the other phone, the old one from the other phone still creates the problem. Probably, it is not the PCB then, or USB connection. It must be something else.
Anyone, any idea?
Mattiii said:
Hi, I did changed both PCBs between phones. Firstly, I had the same problem on both phones, then I made better connections and the batteries started to warm up. Finally, the new one works with the other phone, the old one from the other phone still creates the problem. Probably, it is not the PCB then, or USB connection. It must be something else.
Anyone, any idea?
Click to expand...
Click to collapse
try fashing raw firmware
on motherboard you can inspect or clean the connector where pcb connects. use magnifying glass to inspect connector
Ok, I actually would like to flash the raw firmware, however I need some guidance here, as the phone that has a problem, is not rooted, and it cannot be detected by any PC now, so I am stuck in the middle and do not know how to proceed...
sukhwant717 said:
try fashing raw firmware
on motherboard you can inspect or clean the connector where pcb connects. use magnifying glass to inspect connector
Click to expand...
Click to collapse
Ok, I actually would like to flash the raw firmware, however I need some guidance here, as the phone that has a problem, is not rooted, and it cannot be detected by any PC now, so I am stuck in the middle and do not know how to proceed...
and the connectors are clean
Mattiii said:
Ok, I actually would like to flash the raw firmware, however I need some guidance here, as the phone that has a problem, is not rooted, and it cannot be detected by any PC now, so I am stuck in the middle and do not know how to proceed...
and the connectors are clean
Click to expand...
Click to collapse
i am little confused here... you changed pcb on one mobile and fast charger do not works on that. you have other mobile which is working perfectly. both are same model.... if right!! do the following thing to find out...
Phone A:- changed PCB. no fast charge, not detected by pc.
Phone B:- working perfectly normal..
now we want to guess if pcb is faulty or there is issue with flex cable or any software related issue..
remove motherboard from phone A. and install it in Phone B.. if on Phone B. things works well then definitely its problem related to pcb.. if things don't works on phone B too. then it may be a firmware related problem..
raw cannot be installed without pc..... the thing you can ty is updating firmware from sd card via recovery mode.
sukhwant717 said:
i am little confused here... you changed pcb on one mobile and fast charger do not works on that. you have other mobile which is working perfectly. both are same model.... if right!! do the following thing to find out...
Phone A:- changed PCB. no fast charge, not detected by pc.
Phone B:- working perfectly normal..
now we want to guess if pcb is faulty or there is issue with flex cable or any software related issue..
remove motherboard from phone A. and install it in Phone B.. if on Phone B. things works well then definitely its problem related to pcb.. if things don't works on phone B too. then it may be a firmware related problem..
raw cannot be installed without pc..... the thing you can ty is updating firmware from sd card via recovery mode.
Click to expand...
Click to collapse
That is correct, I say it again - I have two phones, same model, same software, kernel, etc. One had a damaged mini USB port, so I purchased 2 PCBs which have mini USB port souldered onto them. I bought them twice, as I was not sure if the first one I got was the correct one. Now, after your first message I changed the PCBs between phones and the result is the same, phone A (which is ok) works with the replacement PCB, and the PCB from working phone still does not work with phone B (the one that has a problem).
As a second step I replaced motherboards between phones now, and the result is still the same, meaning the motherboard from phone B does not seem to work better while it is in phone A body. The symptoms I'm struggling with are: charging takes over 8-9 hours, so it is considerably extended charging (battery is original factory battery 3000 mAh), the phone does not fastcharge at all and it is not detected by any PC.
The phone is not roooted so, I'm afraid I cannot make any changes to firmware through recovery, as it needs to be connected by a cable to a PC, unless there is something else I can do about it, but how to get any further?
Mattiii said:
That is correct, I say it again - I have two phones, same model, same software, kernel, etc. One had a damaged mini USB port, so I purchased 2 PCBs which have mini USB port souldered onto them. I bought them twice, as I was not sure if the first one I got was the correct one. Now, after your first message I changed the PCBs between phones and the result is the same, phone A (which is ok) works with the replacement PCB, and the PCB from working phone still does not work with phone B (the one that has a problem).
As a second step I replaced motherboards between phones now, and the result is still the same, meaning the motherboard from phone B does not seem to work better while it is in phone A body. The symptoms I'm struggling with are: charging takes over 8-9 hours, so it is considerably extended charging (battery is original factory battery 3000 mAh), the phone does not fastcharge at all and it is not detected by any PC.
The phone is not roooted so, I'm afraid I cannot make any changes to firmware through recovery, as it needs to be connected by a cable to a PC, unless there is something else I can do about it, but how to get any further?
Click to expand...
Click to collapse
which firmware you are currently on? lolipop or MM? factory reset your device then apply latest lolipop update from sd card
sukhwant717 said:
which firmware you are currently on? lolipop or MM? factory reset your device then apply latest lolipop update from sd card
Click to expand...
Click to collapse
I was on lolipop, updated to MM now, but still no joy, charges very slowly like before and when connected to any PC it says one of the recently connected devices is not working properly, so I'm stuck ... I cannot root or apply any ADB sideloads ...
Mattiii said:
I was on lolipop, updated to MM now, but still no joy, charges very slowly like before and when connected to any PC it says one of the recently connected devices is not working properly, so I'm stuck ... I cannot root or apply any ADB sideloads ...
Click to expand...
Click to collapse
Is your ext. sd being seen in file manager ?
Can you get into 6.0 recovery ?
If yes , you can now downgrade which will reset your fone , With a factory reset in the process , check my signature below.
Your fone not being seen maybe driver issue if other zens too are not being seen...but ..let's see what happens after downgrade.
After downgrade if still slow charge, reboot while connected to charger.
If same prob ..hardware !
sukhwant717 said:
which firmware you are currently on? lolipop or MM? factory reset your device then apply latest lolipop update from sd card
Click to expand...
Click to collapse
timbernot said:
Is your ext. sd being seen in file manager ?
Can you get into 6.0 recovery ?
If yes , you can now downgrade which will reset your fone , With a factory reset in the process , check my signature below.
Your fone not being seen maybe driver issue if other zens too are not being seen...but ..let's see what happens after downgrade.
After downgrade if still slow charge, reboot while connected to charger.
If same prob ..hardware !
Click to expand...
Click to collapse
Thanks, I was not so deeply checking all available options. SD downgrading worked well for me, however the problem still is in the phone. However, I discovered a few positive and negative signs, which tell me that there is something else - could be the connection - after upgrading to MM before the phone was restarted at least 3-4 times the screen was not going to sleep mode after a minute, it was coming back on and on and on again. After 3-4 restarts it behaved normally again. The same thing happened after downgrade to L.
Another positive discovery is that the SMMI test now works well and everything is ok now, before it got stuck on the 1st or 2nd test and was not going any further ....
One more spot, which was very hard to catch as it popped up for a 0,1 second but dissappeared then quickly so I had to record it with the other phone and play very slowly on the PC - it looks like the Asus cover window pops up and it says - move your finger around the circle to get quick access to your preferable apps and there is also a blue button: Do not show again . This is flashing now and then and I do not have Asus Cover, so the behaviour is quite odd to me.
I have a feeling that there might be something with connections, but really I do not know what else - I checked it 30 times and made sure everything was properly alligned and tight when I was changing the PCB with micro USB port.
By the way the other phone works well on PCs, so I must have all drivers installed, it is just the second phone that is half bricked... I'm wondering now if maybe flashing CM 12 or 13 will help, however as it is not rooted probably it will not work via SD card... or? Am I looking in the right direction?
Buddy , its hardware so software tweaks will be useless .
Buddy, we are on the same ****ing boat.
I tried to go back to 6.0,but i got my phone bricked and now i cant reverse it back because i need usb connection to the computer and simply it isnt recognized.
I suggest you to send the phone to the asus assistance centre or to buy a new usb port for your phone,as it is clearly damaged like mine.I need to do it too so if you want to wait me first so i can check if it works,ill maybe save you some money.
RxDave said:
Buddy, we are on the same ****ing boat.
I tried to go back to 6.0,but i got my phone bricked and now i cant reverse it back because i need usb connection to the computer and simply it isnt recognized.
I suggest you to send the phone to the asus assistance centre or to buy a new usb port for your phone,as it is clearly damaged like mine.I need to do it too so if you want to wait me first so i can check if it works,ill maybe save you some money.
Click to expand...
Click to collapse
Well, my phone successfully reversed to Lolipop, and I changed the USB port, I talked to Asus authorised service centre and they said it will cost the price of the phone, so I just give up, as everything works, but not the phone with the computer via USB and not the quick charging. Asus centre said it is a motherboard failure, but I'm asking how is that possible if all other functions work well???
timbernot said:
Buddy , its hardware so software tweaks will be useless .
Click to expand...
Click to collapse
Yes, I see your point, but I cannot imagine how is this possible, when all other things work well on the phone and the SMMI test shows all sensors working properly?
Mattiii said:
Yes, I see your point, but I cannot imagine how is this possible, when all other things work well on the phone and the SMMI test shows all sensors working properly?
Click to expand...
Click to collapse
Ask yourself the same 2 questions again once more
Is your phone recognised by PC ?
Is fast charging working now ?
If answer is no after downgrade .
You know the answer
i changed mainboard and working
well, i have the same problem and i try the following possibility and all unsuccessful.
1. i tried 3 different pcb still no luck
2. i changed sim flex still no luck
3. i changed battery still no luck
4. i changed lcd and digitizer completely still no luck
5. i wiped cache from android recovery MM still no luck
6. i wiped data and factory reset from android recovery MM still no luck
7. i install same latest os (MM) for ze551ml from sd card still no luck
8. i use original ac adapter and cable and tried working different one for every step.
so i want to ask a questions. can it be ground connection somewhere on cases? or motherboard
i am tired but problem found. it is exactly motherboard problem. i bought used original mainboard and all is working.
Note: other mainboard using same android os version so it is not os failure.