How Lenovo P770 phone restores the system before the update

2. Back up data through backup software;

3. Copy the firmware to the root directory of the memory card and turn it off, press the power button and the volume plus button at the same time to enter the system upgrade mode;

4. Check "System Update" (if you need to clear data, please check "Clear Data" at the same time), and click "Start" to upgrade the system;

5. When the system is upgraded, please do not shut down;

6. After the system upgrade is completed, the phone will start automatically;

7. Go to System Settings About Phone to check the system version.

Go to [Settings] - [Backup & Reset] - [Factory Reset], you can check [Backup Data Before Reset] and [Format Internal Memory Card] as needed, and finally click [Reset Phone] to follow the prompts. Back up data before reset: If you select this option, you can back up important data content for restoration. Format Internal Memory Card: If this option is selected, all data contents from the internal memory card will be erased, including the data backed up on the internal memory card.

The factory reset tutorial is as follows:

Hello, sorry for the inconvenience.

This phenomenon is caused by the failure of the built-in system, and it is recommended to flash the machine.

There is a certain risk in flashing the machine by yourself, and the failure to flash the machine may affect the normal warranty of the device. Therefore, we do not recommend flashing the machine by yourself, you can choose to go to the local after-sales site to let the engineer assist in processing.

You can visit the official website to check the balance

You are welcome to contact us or visit Lenovo at any time

Consult to find out.

Lenovo P770 phone can not restore factory settings may be caused by the wrong method, it is recommended to try again according to the following method:

1. Turn on your phone, go to your phone's home screen, and tap Apps.

2. After entering the app interface, tap Settings, find the Privacy option, and click to enter.

3. After entering, click to reset the factory data, and then click to reset the phone, at this time, the system will pop up a prompt message, click the OK dry letter to start resetting the wheel, after the reset is completed, the phone will be restored to the factory setting state.

4. Note that before resetting factory settings, you should back up the important data in your phone, such as contact information, call logs, text message records, etc.

5. If the reset phone click is invalid, it may be caused by the loss of system files, you need to connect the phone to the computer, and use the flashing tool to flash the phone into the new system to solve the problem; The specific flashing tutorial and flashing package can be obtained by visiting the official forum of Lenovo phones.

Hello. If you have an abnormal device after flashing or want to downgrade back to the original version, it is recommended that you flash the device again to restore the normal use of your device.

The firmware package has a detailed tutorial built-in, please be careful!

The business hours of the maintenance site are usually from 9:00 to 18:00 from Monday to Sunday, and the stations will be slightly adjusted according to their own operations.

If you have other questions in the follow-up use process, you are welcome to contact us at any time or visit Lenovo Lewen (for consultation.

I'm sorry for the confusion, P770 is to support the direct "**upgrade" system to update the system, the steps are as follows: connect the phone to the Internet, enter the system settings - about the phone - system update. However, the upgrade is different from flashing, the popular point of flashing is understood as the reinstallation system, it is more complicated to operate, and there are risks, the official is not recommended that you flash the machine.

At present, the latest official firmware of P770: Lenovo P770 S128 130807, Android, it is recommended that you can go to System Settings - About the phone to check, if the system used by your mobile phone is not currently the latest, you can upgrade through the above ** upgrade method.

Dear Lenovo users, hello!

The firmware upgrade is a software upgrade on the basis of this system, which is an optimization of the current system, while flashing is the replacement system. Flashing is actually not troublesome, as long as there is a rom, it is enough.

Flashing preconditions.

2: The mobile phone has sufficient power, and it is recommended that more than 50% of the battery remains.

Ensure that the internal storage of the phone or the external SD card of the mobile phone has at least 100M or more remaining capacity than the ROM package.

Step Method. 1.Connect your phone to the flashing master.

3.Perform rooting

6.One-click flashing.

Prepare the ROM,Start flashing the phone with one click,Before flashing starting, the flashing master will check the phone and the flashing package,Click "Browse" to select the best ROM just now,Don't forget to follow the prompts to back up contacts、SMS and applications。

After entering the "one-key flashing" mode, the device will enter the automatic flashing mode, and after about 5-15 minutes, you can complete the one-key flashing and flashing. Please be patient.

Wait for a few minutes and the flashing will be done automatically.

Lenovo Mobile Tablet Service & Support**.

System Settings About Phone System Upgrade.

It's not updated anymore.,Freeze in s128.。

After flashing, enter the recovery mode and double clear it.