Database Users

100 % Tested Method: Revert to stock rom from a custom rom

This is a guide to revert your phone to a stock rom and recovery from a custom rom
Disclaimar: I have tested this process on my phone and its working perfectly. However, please proceed at your own risk. Neither me nor my cat will be responsible if anything happens to your phone or if a nuclear war starts because of the steps in this guide/tutorial.
Carry out each steps carefully and in order.
Steps-
1)Download the following file, extract it and install the drivers and PDANet from subfolder number 1-
https://onedrive.live.com/redir.aspx?cid=a8c496f804111624&resid=A8C496F804111624!793&parId=A8C496F804111624!788&authkey=!ALSImEVdBsmkGk4&ithint=file,rar
2) Download the offline update package from here and rename it as update-
http://g3.letv.cn/194/1/65/letv-hdt...1S-5.5.012S.zip?b=123456&platid=5&splatid=500
3) Place the offline update package at the root of your internal memory. Make sure the name is update and nothing else
4) Enable USB debugging-
Open Settings > About Phone Then tap “Build number” seven times to enable Developer options. ... Go back to Settings menu and now you'll be able to see “Developer options” there. Tap it and turn on USB Debugging from the menu on the next screen.
5) Connect the phone with the computer using a USB cable and wait till the drivers get installed.
6) Lock bootloader-
Open the folder (vishal1286) you downloaded and go to folder 3 > adb. On the computer keyboard press & hold the shift key and right click on the mouse. Now click on "open command window here". In the command window type- adb reboot bootloader Once the phone boots into the bootloader mode, type- fastboot oem lock. Wait for sometime and press the Volume Up button once. Your bootloader will be locked now. Now switch off your phone by pressing and holding the power button of the phone for ten seconds. (Repeat this process of switching off your phone if it powers back on.) Remove the USB cable from the phone.
7) Select scatter file-
Open the folder (vishal1286) you downloaded, go to folder 3 > SP-Flash-Tool-v5.1532.00 and double-click on flash_tool.exe
8) Select scatter file- Click on Scatter-loading and select the scatter file from subfolder 2.
9) Select Userdata.img-
Untick recovery from the populated list below and make sure userdata is ticked. Now click on the download button. Keep pressing the Volume down key and attach the USB cable to the phone. The process of flashing will start and at the bottom you will first see a red bar and then a yellow bar. When it successfully completes you will get a succcess popup. Click on OK in the popup. Remove the USB cable from the phone.
10) Select recovery.img-
Untick userdata from the populated list below and make sure recovery is ticked. Now click on the download button. Keep pressing the Volume down key and attach the USB cable to the phone. The process of flashing will start and at the bottom you will first see a red bar and then a yellow bar. When it successfully completes you will get a succcess popup. Click on OK in the popup.
11) Flashing stock rom-
Press and hold Volume up button and power button together till the phone boots in recovery mode. Select "Update System" and uncheck Clear Data. (If you get a warning click on OK.) Now click on start. The flashing of stock rom will start.
12) Additional Step-
If you are coming from an another rom or if you want a clean phone, its better you do a factory reset. Press and hold Volume up button and power button together till the phone boots in recovery mode. Select "Clear Data" and uncheck Update System. (If you get a warning click on OK.) Now click on start. Once its reset. Click on restart. Dats it.
Credits: naeem210 from Letv India Forum

vishal1286 said:
This is a guide to revert your phone to a stock rom and recovery from a custom rom
Disclaimar: I have tested this process on my phone and its working perfectly. However, please proceed at your own risk. Neither me nor my cat will be responsible if anything happens to your phone or if a nuclear war starts because of the steps in this guide/tutorial.
Carry out each steps carefully and in order.
Steps-
1)Download the following file, extract it and install the drivers and PDANet from subfolder number 1-
https://onedrive.live.com/redir.aspx?cid=a8c496f804111624&resid=A8C496F804111624!793&parId=A8C496F804111624!788&authkey=!ALSImEVdBsmkGk4&ithint=file,rar
2) Download the offline update package from here and rename it as update-
http://g3.letv.cn/194/1/65/letv-hdt...1S-5.5.012S.zip?b=123456&platid=5&splatid=500
3) Place the offline update package at the root of your internal memory. Make sure the name is update and nothing else
4) Enable USB debugging-
Open Settings > About Phone Then tap “Build number” seven times to enable Developer options. ... Go back to Settings menu and now you'll be able to see “Developer options” there. Tap it and turn on USB Debugging from the menu on the next screen.
5) Connect the phone with the computer using a USB cable and wait till the drivers get installed.
6) Lock bootloader-
Open the folder (vishal1286) you downloaded and go to folder 3 > adb. On the computer keyboard press & hold the shift key and right click on the mouse. Now click on "open command window here". In the command window type- adb reboot bootloader Once the phone boots into the bootloader mode, type- fastboot oem lock. Wait for sometime and press the Volume Up button once. Your bootloader will be locked now. Now switch off your phone by pressing and holding the power button of the phone for ten seconds. (Repeat this process of switching off your phone if it powers back on.) Remove the USB cable from the phone.
7) Select scatter file-
Open the folder (vishal1286) you downloaded, go to folder 3 > SP-Flash-Tool-v5.1532.00 and double-click on flash_tool.exe
8) Select scatter file- Click on Scatter-loading and select the scatter file from subfolder 2.
9) Select Userdata.img-
Untick recovery from the populated list below and make sure userdata is ticked. Now click on the download button. Keep pressing the Volume down key and attach the USB cable to the phone. The process of flashing will start and at the bottom you will first see a red bar and then a yellow bar. When it successfully completes you will get a succcess popup. Click on OK in the popup. Remove the USB cable from the phone.
10) Select recovery.img-
Untick userdata from the populated list below and make sure recovery is ticked. Now click on the download button. Keep pressing the Volume down key and attach the USB cable to the phone. The process of flashing will start and at the bottom you will first see a red bar and then a yellow bar. When it successfully completes you will get a succcess popup. Click on OK in the popup.
11) Flashing stock rom-
Press and hold Volume up button and power button together till the phone boots in recovery mode. Select "Update System" and uncheck Clear Data. (If you get a warning click on OK.) Now click on start. The flashing of stock rom will start.
12) Additional Step-
If you are coming from an another rom or if you want a clean phone, its better you do a factory reset. Press and hold Volume up button and power button together till the phone boots in recovery mode. Select "Clear Data" and uncheck Update System. (If you get a warning click on OK.) Now click on start. Once its reset. Click on restart. Dats it.
Credits: naeem210 from Letv India Forum
Click to expand...
Click to collapse
Closed pe5r OPs request

how to factory reset a pattern locked phone

Hi. yesterday i bought a redmi 3s... i have put a pattern which i forgot and also a fingerprint unlock... the fingerprint unlock was working, until i tried other fingers to see if it could be fooled... obviously after too many tries, the fingerprint unlock won't unlock the phone without the unlock pattern... is there a way to hard reset such a phone ore delete user settings... i tried volume up + power button to acess the recovery menu, but when i acess it i get a weird menu saying:
your device has loaded a different operating system
for more info visit g.co/placeholder
if no key is pressed:
your device will boot in 5 seconds
if i press volume up or down, i get this menu:
power off
restart
recovery
fastboot
back to previous page
recovery and back to previous page return to the same screen mentioned above....
please help! :crying:
also, when i connect my phone in any mode to my computer via usb cable (download mode, fastboot mode, normal mode) i hear the usb connect sound but no folders open. I'd like to get to pictures made in the last 24 hours (thats the only thing you can acess without the pattern unlock on the side swipe menu).

You can still use the usb when boot using fastboot, just move to another port of usb in your PC/Laptop etc, for unlocking pattern :
Try this
http://en.miui.com/thread-21391-1-1.html
Now you dont even need to wipe your data again

same problem with me. but i have also a problem that is the redmi 3s prime smartphone is not fast boot.
when i swithch off the phone and after that i press switch on key and with volume key then i found recovery download fastboot like some options.
i click on fastboot.
after that fastboot process is running but not completed
what should i do for stop this processing

pulkit bansal said:
same problem with me. but i have also a problem that is the redmi 3s prime smartphone is not fast boot.
when i swithch off the phone and after that i press switch on key and with volume key then i found recovery download fastboot like some options.
i click on fastboot.
after that fastboot process is running but not completed
what should i do for stop this processing
Click to expand...
Click to collapse
Press and release power button few times. Phone will restart.

SM-T530 can't enter in Download mode (Recovery mode OK)

Deal All,
My first goal (before rooting, try custom rom etc.) is to update with official rom from Android 4.4.2 to 5.0.2.
Samsung Kies ask me to use SmartSwitch which said "your device can't be upgraded" or something like that.
As said in title, I cannot enter in download mode. Pressing Vol+ Home and Power display the usual warning message, Vol+ to continue / Vol- to cancel.
Pressing the Vol+ just reboot the tab.
Entering Recovery Mode work fine with Vol- Home and Power.
I found some info about an eventual "OEM lock" to turn off. I followed instruction but no way, no "OEM lock" appear in Dev menu...
The tab as been wiped thanks to the recovery mode.
Any idea?
Thanks!
Edit: Resolved, it was a faulty volume button

i had th same thing but on lte version i just went to settings, delevoper options, end unlock bootloader or smthing like that it magically started working

Thanks for your reply. Basically those are instructions I followed without success:
1 - Turn off the phone.
2 - Turn on the phone by holding down the volume up button.
3 - The phone will enter official recovery mode.
4 - Wipe cache partition.
5 - Wipe data/factory reset.
6 - Reboot system.
7 - Log in to your Google account and your Samsung account.
8 - Go to settings and enable developer mode.
9 - Enter developer mode, enable "OEM unlocking" option.
10 - Now you will be able to enter the DOWNLOAD mode
I can't find any settings in dev mode meaning "OEM unlocking" or "unlock bootloader"...
I tried also to communicate with Odin, but the tab is only detected in regular mode, not in recovery mode.
I know it's kind of old device, but I can't be the only one, a solution should exist...

Ok, so it's resolved, and was even more stupid than you may think: my physical volume button was faulty and didn't catch each time when I pressed Vol+ or Vol-. Using a small tool did the trick.

[Q] [help] Unable to open Download mode with unlock bootloader option

Imma need a bit of assistance here. I have been trying to get into Download (DL) mode while pressing vol up + down and plugging in the cable. But it just starts charging.
I can get into DL mode through recovery but that goesn't give me an option to unlock bootloader. Of course, OEM unlock and USB debugging are turned on. I even flashed the latest firmware A205FXXSBCVI2.
I was trying to odin flash custom recovery image which doesn't complete and on DL screen it says, Custom image (boot) blocked by OEM lock. I have unlocked a lot of phones before but I guess I never had to unlock a Samsung bootloader!
Thanks in advance.

This should work:
The following steps WILL WIPE YOUR DEVICE
1. Enable Developer Options by pressing the “Build Number” option in the “Settings” app within the “About” menu
From within the Developer options menu, enable OEM unlock.
3. Power off the device, and boot it into download mode:
With the device powered off, hold Volume Up + Volume Down and connect USB cable to PC.
Now, hold down the “Volume Up” button until you see the “Unlock bootloader” screen.
Then press the “Volume Up” button once to unlock the bootloader.
7. Your device will reboot twice and erase your data, you may now unplug the USB cable from your device.
8. Run through Android Setup skipping everything you can.
9. Re-enable Development settings by clicking the “Build Number” option 7 times, in the “Settings” app within the
“About” menu, and verify that “OEM Unlock” is enabled and greyed out in the “Developer options” menu.
If you have any problems, let me know.

MogamboDude said:
Imma need a bit of assistance here. I have been trying to get into Download (DL) mode while pressing vol up + down and plugging in the cable. But it just starts charging.
I can get into DL mode through recovery but that goesn't give me an option to unlock bootloader. Of course, OEM unlock and USB debugging are turned on. I even flashed the latest firmware A205FXXSBCVI2.
I was trying to odin flash custom recovery image which doesn't complete and on DL screen it says, Custom image (boot) blocked by OEM lock. I have unlocked a lot of phones before but I guess I never had to unlock a Samsung bootloader!
Thanks in advance.
Click to expand...
Click to collapse
I'm having the same issue did you got it to work

Nope. I don't have access to that phone for the time being. But I came accross a point that we need to plug in the audio cable on new Samsung phones to get that unlock option.
Haven't tried yet though.

MogamboDude said:
Nope. I don't have access to that phone for the time being. But I came accross a point that we need to plug in the audio cable on new Samsung phones to get that unlock option.
Haven't tried yet though.
Click to expand...
Click to collapse
Is “OEM Unlock” greyed out?

Nope. I had it enabled.

MogamboDude said:
Nope. I had it enabled.
Click to expand...
Click to collapse
So is this thread [RESOLVED] then? Was that the problem?

Not resolved! OEM unlock is enabled in developer settings. But still unable to get unlock bootloader option

Can't unlock bootloader

Hi,
I have trouble unlocking my A40. It's 2nd piece I own and the problem is the same.
When I follow the steps from this forum;
Go to Developer Settings and enable "OEM Unlock" option
Power off the device and boot in download mode
In download mode, you will see the long press and volume up option to unlock the bootloader
Unlock the bootloader. That will wipe your device so be sure you made a backup of your data
After bootloader unlock, boot up the phone and make sure it is connected to the internet or it will trigger rmm prenormal
Setup the phone without google account and others
Reboot in download mode and flash the recovery and vbmeta images
Boot to TWRP
Format data in TWRP
Flash the Multidisabler zip
Now you can reboot
Click to expand...
Click to collapse
I'm stuck at the 3rd point.
I don't see ANY instruction about Volume UP + Power in download mode. Nor FASTBOOT see my device to run actions with it.
What I see is only "Volume down key + power key for more than 7 secs Cancel (restart phone).
And holding Vol UP + Power doesn't do anything.
How to make this work?
Thanks.

sjiamnocna said:
Hi,
I have trouble unlocking my A40. It's 2nd piece I own and the problem is the same.
When I follow the steps from this forum;
I'm stuck at the 3rd point.
I don't see ANY instruction about Volume UP + Power in download mode. Nor FASTBOOT see my device to run actions with it.
What I see is only "Volume down key + power key for more than 7 secs Cancel (restart phone).
And holding Vol UP + Power doesn't do anything.
How to make this work?
Thanks.
Click to expand...
Click to collapse
You did enable OEM Unlock, correct?
Turn the device completely off, without any cables connected. Keep a USB cable ready that's plugged into your PC.
With the device powered off, hold both Volume buttons, and plug in the USB cable connected to your PC. Do not press Power. You should see a prompt on either a green or blue screen; select the option for Device Unlock Mode.

Finally.
Thank you for making me try for another time