Lenovo A850 did not jump after entering the engineering mode,What should I do,Woo woo! Quick back

Hello. Since it is not known here that you enter the engineering mode of the mobile phone, if you want to perform a double clearing operation on the mobile phone, please refer to the following Lenovo A850 double clear operation.

Lenovo A850 Shuangqing operation, please refer to:

a.Press and hold the power button and the volume button + at the same time in the shutdown state, and the interface prompting to enter the factory mode will automatically enter the engineering mode;

b.Under this interface, press the volume key + - to move to eMMC, and the home button is the OK key, then the clearing will be completed and it will restart automatically.

If you are unable to do it yourself, it is recommended that you take the time to go to the workshop and have an engineer assist you in handling the problem.

You can access:

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

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

Consult to find out.

Force restart, press all keys once.

If you entered this mode by mistake, it may have been entered by touching the volume keys during power-on. You can try to move the volume button up and down to the reboot option, and restart it after the home button is confirmed;

You can also restart the operation by disassembling and disassembling the battery once;

If you still enter this mode after powering on, it is not ruled out that it is a problem with the volume buttons, and it is recommended that you activate the volume buttons before performing the above operations; If the fault persists and the volume button is normal, it cannot be ruled out that it is a system problem and you need to flash the machine; However, there is a certain risk of flashing the machine by yourself, and the failure to flash the machine will affect the normal warranty of your device. Therefore, we do not recommend that you flash the machine by yourself, you can choose to go to the local after-sales site to let the engineer assist in processing. Lenovo authorized repair site inquiry.

Dear Lenovo users, hello!

Dear Lenovo users, hello!

Depending on your problem, it is recommended that you press the "Volume Down button" and select "Restart phone", then tap the four-leaf clover button at the bottom of the screen to confirm.

Dear Lenovo mobile phone users, hello!

According to the description, due to the abnormal entry into the engineering mode after the mobile phone is flooded, you try to restart the battery again, if the problem is still there, it may be caused by the abnormality of the relevant components on the motherboard, it is recommended that you immediately remove the battery, as soon as possible to the local Lenovo after-sales service center, let the engineer help deal with and solve.

You can log on to the official website for the specific address.

It's okay.,It's just that the phone comes with the engineering upgrade mode.,If you don't have an official upgrade package in the SD card, it'll stop here.,It's recommended that the phone be thoroughly processed and dried on the battery.,There's no problem.。

After the Lenovo A828T mobile phone is completely turned off, press and hold the power button and the volume up and down keys at the same time, and it is good to enter the interface and release the button, that is, you can enter the recovery mode.

In this interface, the volume button can be used for the movement option, and the power button is used to confirm the button.

Hello. It is recommended to press and hold the switch button and the volume button at the same time to power on the state of shutdown, please understand.

You are welcome to contact us or visit Lenovo Lewen (

Trace Huai for consultation and understanding.

1. If you want to exit the engineering mocking rolling shed, press and hold the power button directly, or reseat the battery after shutting down, and then restart it;

2. If you want to flash the machine, because the flashing machine is risky and can quietly affect the equipment warranty, if necessary, it is recommended to go to the maintenance site to touch the flash operation. If you have flashing experience and are willing to bear your own risk, it is recommended to search for the firmware package of the matching model through Lewen Bar** to try. If you really can't complete the processing by yourself, it is recommended to send it to the repair site in time.

Upgrade the firmware and flash back to the original.