Before you buy a new cell phone or new tablet, please try the following procedure to repair your device. First charge your battery, backup your important data if possible and in most cases take out SIM and SD card before factory reset. It is impossible to recover your data after doing a hard reset, so online backup is always important. For all of your data, a backup should be done on an external device, hard drive, raid system or media. With or without insurance, if your cell phone lost, damaged or stolen at least your invaluable data is backed up in a safe place. If you are about to sell your phone and you want to wipe your personal data, or if your phone affected with virus you have to do a hard reset. In some cases, you can delete the forgotten password or lock pattern from your device as well. All information is for devices with stock based ROMs. If you are using rooted device, always back up your EFS folder first, containing your IMEI info, etc.!
Lenovo ET980 soft reset rebootLenovo ET980 Soft Reset Button: For system reset and keep SDRAM data.
click the Reset key with the touchpen, which will restart the system. If the fault does not disappear, power on the mobile phone with cold boot operation.
Lenovo ET980 Cold bootHold the ON/OFF key and the RESET key together for at least 5 seconds and then release these two keys simultaneously.
Any exchanging of the main battery should be finished within 20 minutes. Otherwise the backup battery may fail to support features such as the system clock, which may lead to power-on failure.
Attention: The cold boot operation will lead to the loss of system clock settings. If the fault doesn’t disappear after cold boot, choose "Restore factory settings".
Note: The steps of "Restore factory settings": Press the RECORD key and the roller’s Down key simultaneously, and then click the RESET key with the touchpen. In the middle of the screen displayed, choose OK item continuously with the Roller key, and then press the Roller Confirm key.
Lenovo ET980 Software UpdatingSoftware updating for ET980 consists of Eboot updating, IPL updating and system updating. This section describes the updating operations. A complete updating procedure should follow the order given below:
Eboot updating ==> IPL updating ==> system updating
Hold the RECORD key. Click and release the Reset key, and the system enters the Eboot mode. Release the RECORD key. Now the Eboot version number is displayed at the bottom of the screen, as shown in the picture given below.
Hold the RECORD key (Reset key) and the screen illustrated by (1) will be displayed. Choose the sixth option ("update ipl image"), and the screen shown by (2) appears.
Connect the mobile phone and the PC with a USB cable. On the PC end, open the updating program file.
Browse the PC to find the file IPL.nb0. Click "Start updating". When the IPL updating is finished.
Hold the RECORD key (Reset key) and the screen illustrated by left figure given below will be displayed. Choose the forth option ("update eboot image").
Connect the mobile phone and the PC with a USB cable. On the PC end, open the updating program file and choose the file for Eboot updating.
Click "Start updating". When the Eboot updating is finished.
Hold the RECORD key (reset key) and the screen illustrated by left figure given below will be displayed. Choose the fifth option ("update system image").
Connect the mobile phone and the PC with a USB cable. On the PC end, open the updating program file and choose the file for system updating.
Click "Start updating". When the system updating is finished.
1. After the updating program is started on the PC, when browsing for the updating file to be used, "All Files (*.*)" should be chosen for the file type. Otherwise the updating file will not be shown.
2. The chosen updating file should be matched with the selected updating option. If an option is mistakenly chosen, press and hold the RECORD key (Reset key) to choose again. The steps are simple, but operations should be performed with caution. If the updating is done with an unmatched file, the JTAG tool has to be used to format the mobile phone.