I have a pin setup on my tf300t in the Parental Lock that came standard on my tablet. I have forgotten the pin, and im wanting to erase all data on my tablet prior to selling. I cant erase all data without putting the parental pin in.
What are my options apart from try to remember the password?
imfromwales said:
I have a pin setup on my tf300t in the Parental Lock that came standard on my tablet. I have forgotten the pin, and im wanting to erase all data on my tablet prior to selling. I cant erase all data without putting the parental pin in.
What are my options apart from try to remember the password?
Click to expand...
Click to collapse
Boot into recovery by holding power + volume down until boots into bootloader menu and select the factory reset using volume buttons. Unless you are rooted with twrp recovery becareful not to format if you have that.
Im stock - not rooted. When i boot into recovery there is no way to select the last option which is wipe. Ive tried using volume up and volume down and also touching the screen but none work...
Ok, i managed to select wipe data, and then it asked me to confirm my choice by pressing volume up, but then rebooted and all of my data is still there!?
imfromwales said:
Ok, i managed to select wipe data, and then it asked me to confirm my choice by pressing volume up, but then rebooted and all of my data is still there!?
Click to expand...
Click to collapse
It it go through the process of factory reset, after selecting wipe data it should then go into recovery where you'd see the android and the blue bar at bottom moving. If it forgone that and just rebooted not sure why it should wipe all data at which you set everything back up. Last thing which not sure if this would work in your case is the reset button under the volume buttons. Should be small hole just stick something in there and reset it. Don't think the password would keep it from wiping data in recovery that's what most people do when they for get it, although that usually for the screen lock but either one wouldn't think it mattered.
If i were you, i would unlock and flash custom recovery (TWRP) and then use that to do a factory wipe, can even wipe your internal SD card as well.
Then when you go to sell it, use "Unlocked" as a positive thing since so many people are bricking their tablets trying to unlock and flash custom recovery you can upsell it saying all the hard work is done just dont screw up during the process xD
Problem with that is, Im using a mac and only done stuff like that on my PC. Im out of the country for another year with no access to a PC...
Can anyone sugest any way I can get around this problem with forgetting the parental pin?
How can i use a mac to instal a custom recovery and then wipe?
Would the reset button wipe the tablet, i cant seem to find the button...
Related
I installed a update.zip(Acer_AV043_A701_0.006.00_WW_GEN1.zip).
then,My A701 restarted, but it's stuck at the ACER logo.
I hook up this device to the PC ,but not go to fastboot mode , "MTB drivers" is no found.
I pressed the "volume up"- and the "power"-button at the same time, released the power-button when the screen turns on and switched the lock switch on and off and on and off: top left corner of the screen says "Erasing Userdata... Unrecoverable bootloader error (0x19000008).
Who can help me? thks.
fishwood said:
I installed a update.zip(Acer_AV043_A701_0.006.00_WW_GEN1.zip).
then,My A701 restarted, but it's stuck at the ACER logo.
I hook up this device to the PC ,but not go to fastboot mode , "MTB drivers" is no found.
I pressed the "volume up"- and the "power"-button at the same time, released the power-button when the screen turns on and switched the lock switch on and off and on and off: top left corner of the screen says "Erasing Userdata... Unrecoverable bootloader error (0x19000008).
Who can help me? thks.
Click to expand...
Click to collapse
Unfortunately, as the 701 is new, there are not a lot of options at this time.
You can try downloading a full stock rom, renaming it to "update.zip", copy it to SD card, and boot your tab holding Vol + and PWR.
See it it installs the rom. You may have to try a couple. Hopefully 1 will work.
I am going to assume the update really wasn't meant for your version (WW_COM_GEN1 build) ?
Other than that, we do not have a service rom (EUU) available for the 701.
The only other option would be Acer Repair.
MD
thank a lot.
Hi Fishwood,
To get into a workable bootloader mode, try this:
Power button and volume DOWN at the same time, while flicking rotation lock on and off
When the tablet vibrates, let go of the power button, but KEEP pressing volume down and KEEP flicking rotation lock
The tablet should get to the bootloader.
Earlier I managed to put my tablet into an unusable state, but this method got me to the bootloader and I was able to continue working.
I'll tell you what I did, but I do not recommend this particular course of action - there is a chance you will completely ruin your tablet. Moscow Desire has warned in no uncertain terms to stay away from Clockwork Mod Recovery and I trust his judgement. I chose to go against his advice to do the following, but I was fully aware that I was running the risk of bricking my tablet.
I checked that the tablet was rooted
I installed CWM 6.0.1.1
I wiped the cache, wiped the user data (factory reset) and wiped the Dalvik
I then installed a stock ROM from the SD card
I then carried on messing around in the way I have been for a few days now.
If you are interested in doing this, I can provide the links for the various posts that I got my information/downloads from.
Seriously though, you do this at your own risk. If you're not sure about what you're doing, or you're not prepared to accept that you might brick your tablet, it's better to follow an alternative course of action.
misteral1970 said:
Hi Fishwood,
To get into a workable bootloader mode, try this:
Power button and volume DOWN at the same time, while flicking rotation lock on and off
When the tablet vibrates, let go of the power button, but KEEP pressing volume down and KEEP flicking rotation lock
The tablet should get to the bootloader.
Earlier I managed to put my tablet into an unusable state, but this method got me to the bootloader and I was able to continue working.
I'll tell you what I did, but I do not recommend this particular course of action - there is a chance you will completely ruin your tablet. Moscow Desire has warned in no uncertain terms to stay away from Clockwork Mod Recovery and I trust his judgement. I chose to go against his advice to do the following, but I was fully aware that I was running the risk of bricking my tablet.
I checked that the tablet was rooted
I installed CWM 6.0.1.1
I wiped the cache, wiped the user data (factory reset) and wiped the Dalvik
I then installed a stock ROM from the SD card
I then carried on messing around in the way I have been for a few days now.
If you are interested in doing this, I can provide the links for the various posts that I got my information/downloads from.
Seriously though, you do this at your own risk. If you're not sure about what you're doing, or you're not prepared to accept that you might brick your tablet, it's better to follow an alternative course of action.
Click to expand...
Click to collapse
thks.
Pls give me the all links.
thank you so much!
I checked that the tablet was rooted I do
I installed CWM 6.0.1.1 I do
I wiped the cache, wiped the user data (factory reset) and wiped the Dalvik I do,but "Error mounting /data!"
Pls help me!
*D821 (E) - hammerhead
*KTU84M
*HW version: rev_11
*bootloader version: HHZ11k
*baseband version: M8974A-2.0.50.1.13
*carrier info: NONE (is this wrong?)
*signing: production
*secure boot: enabled
*lock state: locked
#I didn't touch this phone's system, still original.
my story:
so it's been 3 weeks since I bought my phone. I was happy with it, nothing was wrong.
a week later, the 4.4.3 came out, I updated it, and nothing was wrong too.
until last night, I turned off my phone, curious to see how the Nexus 5's recovery look like,
I pressed (volume down + power), and I noticed that it enters FASTBOOT mode. and I just learned, navigate with the volume buttons and select with power button.
NOTICE: I'm already familiar with things like this, I was in the Galaxy W forum and Galaxy SIII mini forum. *yes lol I came from Samsuck
so I selected recovery mode and enter it.. I saw the android logo there, the healthy one, not the murdered robot with a red triangle on it.
I saw nothing but that logo, I pressed volume up button and the text showed up. I navigate down with volume down button, until it was down at the "wipe cache partition", I wanted to go up to reboot my phone, but I realized, the up button just a switch to hide or show the recovery text, so there's only one choice, press the power button, *if I press the power button, I wipe the cache because it selects "wipe cache partition"*.
and then it writes "wiping the cache", I was confused why it was so long, until I decided to reboot with holding the power button.
NOTICE: it is strange to wait sooooo long for cache wiping. I know this.
the system turned on. I'm not sure if the cache wiped cleanly, I'm afraid it will make the system error. so I decided to change my runtime from ART to Dalvik, so the cache wiped out and built again, strange process that took only 64 apps to optimize, that before it was around 110 apps. and then after reboot, I decided to go ART again to saw how many apps that optimized, LOL it was again, 64.
I reboot my phone again, and wait the reception, LOL strange I got no signal in my home *usually full*.
NOTICE: the signal has already gone after first cache wipe.
somehow I go to About Phone, Status on the Settings, and I found out the IMEI is UNKNOWN. I tried to check it with *#06# and it shows nothing.
I repeat the process how I get to the recovery and try to wipe cache, and it said, "error: can't mount /cache".
so I think the cache was gone?? I look to the "Explorer" app *the one who makes the root version too (Root Explorer)*, well the cache partition still there.. LOL
MY QUESTION:
1. am I having a defective Nexus 5? or there is a bug?
2. my IMEI lost, I have 2 expectations: my EFS/IMEI is truly lost, or the system just can't detect it? how can I know?
3. I saw a thread that tells me Nexus 5 doesn't have EFS partition backup, so where does the EFS located?
4. if I follow you guys, unlocking bootloader, rooting and etc. can I make my phone's state default again? *I don't mean fix this thing, just go default*
5. most important thing, HOW CAN I GET MY PHONE BACK TO NORMAL?? *peace bro
please help, right now I'm trying to reset my phone as soon as my backup finishes.
thx
I think people have remedied this problem by flashing the factory image. If that doesn't work then it is probably a hardware defect and will have to be replaced.
There's an option in the stock recovery which reads "Reboot System Now". You could have selected that if you didn't want to do anything.
1. No, the cache partition got messed up and hence the unknown IMEI and signal loss.
2. The system just can't detect it because of the reason mentioned above.
3. EFS is located on the /efs partition but you need root to back it up or restore it.
4. No need to root the phone to fix this. Go back to the stock recovery and wipe cache partition again and this time around WAIT PATIENTLY for it to complete. This should fix it.
5. ^^^^^^
vin4yak said:
There's an option in the stock recovery which reads "Reboot System Now". You could have selected that if you didn't want to do anything.
1. No, the cache partition got messed up and hence the unknown IMEI and signal loss.
2. The system just can't detect it because of the reason mentioned above.
3. EFS is located on the /efs partition but you need root to back it up or restore it.
4. No need to root the phone to fix this. Go back to the stock recovery and wipe cache partition again and this time around WAIT PATIENTLY for it to complete. This should fix it.
5. ^^^^^^
Click to expand...
Click to collapse
as I told you before, I can't select "reboot system now" because the volume up button strangely working as show/hide text. wipe cache partition, the /cache can't be mounted.
BirchBarlow said:
I think people have remedied this problem by flashing the factory image. If that doesn't work then it is probably a hardware defect and will have to be replaced.
Click to expand...
Click to collapse
well, my phone still original untouched.. what if you were me, having an untouched phone and it has already been like this? I don't think I would touch it ._.
anyway, @BirchBarlow @vin4yak , I can go adb and fastboot without root or unlock bootloader right? thx anyway
IvanKurnia said:
as I told you before, I can't select "reboot system now" because the volume up button strangely working as show/hide text. wipe cache partition, the /cache can't be mounted.
Click to expand...
Click to collapse
Strange indeed. Yeah, those errors are common. Just try wiping cache multiple times. If not, factory reset the device.
IvanKurnia said:
well, my phone still original untouched.. what if you were me, having an untouched phone and it has already been like this? I don't think I would touch it ._.
Click to expand...
Click to collapse
Since you're responsible for this mishap, I would certainly try to fix it myself if I were you. Wiping cache/factory reset is the only thing you can do with a locked bootloader. If that doesn't fix it, the phone's hosed!
IvanKurnia said:
anyway, @BirchBarlow @vin4yak , I can go adb and fastboot without root or unlock bootloader right? thx anyway
Click to expand...
Click to collapse
ADB is used whilst you're in Android OS/custom recovery. You first need to unlock the bootloader, flash/boot a custom recovery and then flash the supersu.zip to gain root. I'm not sure what purpose it will serve in your situation though??
this happened to me too. and I waited for the the wipe cache operation for 15 minutes. After a forced reboot the phone was not connecting to the cell network, had a 1970 date and gave various google errors. I went back to recovery, noticed the comatose android and the missing cache partition messages but again I selected wipe cache and this fixed it. It took just a minute or so to create and format it. After the reboot the phone was fine. phew...
This problem happens when the cache partion is not formated properly. You can't take screenshots either, right? You should try to format the cache partition again, and again until your phone becomes normal, or unlock bootloader and flash the cache.img from the stock images. You can find all the instructions about unlocking bl and flashing cache image in the sticky posts of the general forum.
Tapatalk-kal küldve az én Nexus 5-el
Hi,
My nexus 5 died a few weeks ago. Today I got a used motherboard to replace the broken one. Phone went on but still had personal files and a password from the previous owner (which had a cracked screen so he couldn't delete his files I guess). I did a factory reset via the recovery mode. Booted the phone up, logged in with my google account and selected the app backup thingy. So I get into the homescreen but my apps are not installing and I get a message my storage is full and it can't install apps and sync etc.
What's wrong? Did the factory reset fail to delete the files from the previous owner and how can I fix this?
Thanks
There's no such thing as a backup thingy. Learn the correct terms if you want to be understand. You dont state the recovery. Stock? CWM? TWR?. Lets try twr. That has two wipes. Did you tick the box to wipe the SD card?
SENT BY ENTANGLEMENT
zerosum0 said:
There's no such thing as a backup thingy. Learn the correct terms if you want to be understand. You dont state the recovery. Stock? CWM? TWR?. Lets try twr. That has two wipes. Did you tick the box to wipe the SD card?
SENT BY ENTANGLEMENT
Click to expand...
Click to collapse
Hi,
I'm not familiar with rooted android devices so I'm sorry but I don't mean what CWM/TWR is. So I guess it's just stock. I pressed volume and power buttong on boot up, selected recovery mode. Then I pressed the power button and volume up button and I selected wipe data/factory reset. Then the phone turned on just like when you take it out of the box. I logged in with my google account and with backup thingy I meant the option to redownload your apps and widgets like how they used to be on your previous device.
teunko123 said:
Hi,
I'm not familiar with rooted android devices so I'm sorry but I don't mean what CWM/TWR is. So I guess it's just stock. I pressed volume and power buttong on boot up, selected recovery mode. Then I pressed the power button and volume up button and I selected wipe data/factory reset. Then the phone turned on just like when you take it out of the box. I logged in with my google account and with backup thingy I meant the option to redownload your apps and widgets like how they used to be on your previous device.
Click to expand...
Click to collapse
Hi,
Thanks for providing more details about your issue (I guess). xP
Anyways. You need to open http://forum.xda-developers.com/showthread.php?t=2784527 in another tab, read the intro if you want, but you should definitely read post #2, chapters 1 and 4.
zerosum0 said:
There's no such thing as a backup thingy. Learn the correct terms if you want to be understand. You dont state the recovery. Stock? CWM? TWR?. Lets try twr. That has two wipes. Did you tick the box to wipe the SD card?
SENT BY ENTANGLEMENT
Click to expand...
Click to collapse
What an elitist arse, it's pretty clear what the poster meant. By the way understand isn't the same as understood, understand?
Good day.
Thanks fore reading my post.
I had root on my phone like for 3 or 4 months. everything was great and all. I did not dwell in any ROM installing or playing with the firmware.
But I am not sure what I did that this happened.
When I restarted my phone, I experienced everything until the Logo faded to the rotating circle(loading). And it stays there. Always.
I did check on many sites and it seems to be a bootloop. I tried going into recovery, used every button combination possible(I have only 3 and also tried and for my phone and for others to work) and I can't.
It just continues normally and to the position I explained before.
I have a Vodafone Smart 4 Max and even though I want the fix for my phone, I know there are other users that also experience/experienced this problem on different phones.
Might there be a way to fix this?
Thank you for your time
EDIT:: I managed to enter in recovery mode and tried a hard reset of the android. The situation is still the same, the bootloop remaining
Go to bootloader and flash factory firmware with fastboot
I wish I could. I have no idea how to access the bootloader(as I see no function like that).
I only have 4 options:
1).Reboot system now
2). Wipe Data
3)Wipe Cache
4). Recovery from back-up on SD (which I am stupid and don't have)
andreinit said:
I wish I could. I have no idea how to access the bootloader(as I see no function like that).
I only have 4 options:
1).Reboot system now
2). Wipe Data
3)Wipe Cache
4). Recovery from back-up on SD (which I am stupid and don't have)
Click to expand...
Click to collapse
How did you get to recovery? Wasn't it through bootloader? I found the information you get into bootloader like this: (power off) press and hold "end call"+"power on"+"volume up". If it doesn't work try the same but with "volume down". I guess you tried it, but you never know (plus I've got a feeling you can flash new rom with option 4 you've got there)
minimale_ldz said:
How did you get to recovery? Wasn't it through bootloader? I found the information you get into bootloader like this: (power off) press and hold "end call"+"power on"+"volume up". If it doesn't work try the same but with "volume down". I guess you tried it, but you never know (plus I've got a feeling you can flash new rom with option 4 you've got there)
Click to expand...
Click to collapse
Hm, I know what you are saying. For me to enter in recovery mode though, I needed to do the following.
1). Fully shutdown the phone for like 30 seconds
2). Volume UP + power button until the first logo with android appears
3). Let the buttons go and I enter
The problem is that adb and fastboot don't see my device at all. I have been tweaking with the drivers for so long, thinking that may be the cause, but I have no results.
And I can use the backup thing to flash a new rom? It requests an update file though, not an image(a zip file)
I think this is about your phone, maybe it will point you in the right direction:
https://www.youtube.com/watch?v=bKHEZbj4NHo
They are figuring out firmware installation on a similair model here: http://forum.xda-developers.com/android/help/stock-rom-vodafone-888-t3002958
Phone was working ok yesterday all day, then I has to take a flight to another city and timezone. When I arrived everything still was ok for about 1 hour, then I wanted to login in the hotel wifi and it wasnt showing the networks. Tried turning on mobile data ando it wasnt turning on either. Rebooted the phone, didn't work. Then I tried to go to the settings and I got an error message "Settings isnt working" and shuts the window. Another message that suddenly appears is HTC Mobile data Lite isnt working.
Tried with info settings > settings > clear data and cache. Didnt work.
Rebooted by holding power and volumen buttons, didnt work.
Went to boot options it says is locked and that ”File" wasnt found.
They boot to recovery gets stuck on the red warning with a triangle image.
Lastly the phone got stuck on reboots, after I do they security pattern it shows they splash screens and logos, reboots and asks for the pattern again.
Never flashed or did something with system files or kernels on this phone.
Wanted to try factroy reset but when I was able to go to the home screen and connect the phone to a Mac using the app AndroidFile Manager..? It said 8gb available to select, which seemed wrong as my phone was almost 60gb full, so wasnt sure it was going to be a good backup.
Any help on what can I do to backup ando solve the issue?
Thanks!
Clear system cache if that's an option.
Factory reset.
If that doesn't get it it will need a reflash. The flight may have caused a Single Event Upset, which is more likely to happen at high altitudes.
The hotel wifi is also suspect, root kit.
Lastly it could be a mobo failure or other hardware issues.
Is possible to clear cache if I can't access home screen? Any chance of backup before factores reset?
I don't think was wifi, didnt have a chance to connect to it or something
I think your stock rom has encrypted your phone's memory . If you want to S-OFF you can try a TWRP recovery otherwise you can install a RUU rom at home. All your data will be destroyed.
Figured out how to wipe partition cache...didn't help. Still stuck on boot loops.
All your data will be destroyed.
Click to expand...
Click to collapse
So there is no method to pull my data out of the device before trying to flash something into it?
Try starting it in safe mode. May take a few tries.
If you get it into safe mode, grab the data.
That's probably your last hope.
This is one big reason I always use a phone that supports an SD card. I use the SD card as the data drive; all critical data goes here. I then redundantly and regularly backup the SD card.
The data drive provides a buffer if the OS crashes/burns and most times is unaffected.
Everything I need to do a full reload/restore is on my data drive. It's time staggered backed up on multiple flashsticks and hdds.
I've lost whole databases before; lessons from the U of hard knocks tend to stick... and suck.
blackhawk said:
Try starting it in safe mode. May take a few tries.
If you get it into safe mode, grab the data.
That's probably your last hope.
This is one big reason I always use a phone that supports an SD card. I use the SD card as the data drive; all critical data goes here. I then redundantly and regularly backup the SD card.
The data drive provides a buffer if the OS crashes/burns and most times is unaffected.
Everything I need to do a full reload/restore is on my data drive. It's time staggered backed up on multiple flashsticks and hdds.
I've lost whole databases before; lessons from the U of hard knocks tend to stick... and suck.
Click to expand...
Click to collapse
Already tried safe mode before your reply. Didn't work either.
Oh well, gonna go for the factory reset then.
Thanks for your help.
xmago said:
Already tried safe mode before your reply. Didn't work either.
Oh well, gonna go for the factory reset then.
Thanks for your help.
Click to expand...
Click to collapse
Try a few more times... play with it.
Been trying, keeps rebooting after entering the security pattern.
I can go to emergency call, it shows com.android.phone is not working but if I click wait after a while it shows the phone UI, I can take screenshots and move the volume bars... one time I don't know how or why, I left the phone while I read something else, on the pattern screen and I had the "Do you want to transfer files" message ... so this gives me hope that I will be able to either go to the system 1 time, or that the ADB is detected so I can pull data.
Tried fastboot boot twrp.img from power shell, but got the warning device won't boot. I guess because I didn't unlocked it and wipe the data first.
Found stock ROM that matches my CID/MID/Carrier, etc. Can I use this to flash something into my phone and fix the booting problem without wiping data?
xmago said:
Found stock ROM that matches my CID/MID/Carrier, etc. Can I use this to flash something into my phone and fix the booting problem without wiping data?
Click to expand...
Click to collapse
The problem is likely in the user data partition itself. Start flipping firmware around all bets are off. Be a lot safer if you could get it into safe mode to retrieve the data.
blackhawk said:
The problem is likely in the user data partition itself. Start flipping firmware around all bets are off. Be a lot safer if you could get it into safe mode to retrieve the data.
Click to expand...
Click to collapse
Gonna keep trying to enter system then, maybe I get lucky.
The zip I downloaded had other zips inside and I can't open or extract them, windows says they are not valid. So I downloaded a different ROM from a different site, and had the same issue. Is this normal? Don't want to be flashing corrupt zip files obviously
xmago said:
Gonna keep trying to enter system then, maybe I get lucky.
The zip I downloaded had other zips inside and I can't open or extract them, windows says they are not valid. So I downloaded a different ROM from a different site, and had the same issue. Is this normal? Don't want to be flashing corrupt zip files obviously
Click to expand...
Click to collapse
The only boot loop I had where I needed data eventually booted into safe mode by itself after a couple tries at normal booting, convenient.
The next time it happened, a few days latter I was ready, lesson learned, always backup data.
As for the files, you're in deeper then I ever had to go. A factory reset be easier and safer if the rom isn't the source of corruption. You got yourself between a rock and a hard place. Personally I would have written the data off by now and factory reset. Of course that's because almost all the data was backed up.
Use the exact same rom.
Someone here can spot what's wrong though with your methods... have patience.
Seems I'm screwd. Did a factory reset, now I'm stuck on the Internet configuration screen after selecting language. Networks don't appear and I got the same "HTC Mobile Data Lite" error screen saying isn't working.
The top bar has a lock and only NFC is turned on. Can't pass that screen.
xmago said:
Seems I'm screwd. Did a factory reset, now I'm stuck on the Internet configuration screen after selecting language. Networks don't appear and I got the same "HTC Mobile Data Lite" error screen saying isn't working.
The top bar has a lock and only NFC is turned on. Can't pass that screen.
Click to expand...
Click to collapse
Try pulling the sim card.
blackhawk said:
Try pulling the sim card.
Click to expand...
Click to collapse
Didn't have one, then I inserted it again, no change. This was the original problem when I got in to the hotel, couldn't turn on wifi or mobile data.
Not sure what else to try. Wanted to try with a custom ROM or something, but can't unlock bootloader, because I can't get the identifier token since I can't get to the debug settings to turn on OEM unlock.
Fastboot oem unlock command is giving me an error.
The status of my software (on the bootloader) says modified, not sure if is it because I tried to boot a twrp.img (but afaik I understood should have been wiped after a reboot)
Extracted the zips with the RUU tool and got some img files, maybe I should try to flash some of those files.
Before you try anything else get the right procedure from an expert here. Otherwise you may trash the one or two shots you might have have.
I'm not that expert but there are members here that are. Sorry to see you having so much trouble...
I had the same problem,
This is processor fault .
the solution that i found to solve this problem is turn off the phone and heat the back cover under the camera using heatgun or hairdyer for about 30sec, don't make it too hot, then power up the phone and long press hardly the back cover under camera using your tumbs while HTC logo comes up. This makes my phone succesed booting up and the signal show up again. Once the phone turn up, just backup everything.
If the signal not showing up and wifi not working , you can use bluetooth tethering or using "gnirehtet" for reverse usb tethtring from computer.
*important : when the phone turn on, go to setting to delete the lock pattern/pin to make your phone not locked.