Jul 22, 2015 - I am not responsible for any damage to your phone What You Need: 1. Restore NVRAM.bin Using SP Flash Tool & Permanent Fix Invalid IMEI Error. Thanks a lot, work fine on 6582 it repair lose mac address and imeis. I flashed my lenovo k4 note using SP FLASH TOOL. After that shows invalid imei. Need to root phone after flashing original rom. Instructions to manually edit and restore wifi address can be found at Russian Lenovo forum. Everything thing is perfect as before but missing my IMEI numbers. And no service Everytime even put sims on. PLEASE Any one help me. My imei number lost after factory reset 10:41 PM.
On this page you will find the secret codes for Lenovo S820. With their help, you can access advanced settings, use the hidden features of your phone, access the engineering menu, get information about the status of your phone's battery and customize your phone to suit your requirements.
ANDROID Lenovo secret codes for Lenovo S820
*#06# - IMEI number*#*#273282*255*663282*#*#* - Immediate backup of all media files
*#*#4636#*#*
This code can be used to get some interesting information about Lenovo S820 and battery. It shows following 4 menus on screen:
* Phone information
* Battery information
* Battery history
* Usage statistics
*#*#7780#*#*
This code can be used for a factory data reset. It'll remove following things:
* Google account settings stored in your phone
* System and application data and settings
* Downloaded applications
It'll NOT remove:
* Current system software and bundled applications
* SD card files e.g. photos, music files, etc.
PS: Once you give this code, you get a prompt screen asking you to click on 'Reset phone' button. So you get a chance to cancel your operation.
*2767*3855# - Think before you give this code. This code is used for factory format. It'll remove all files and settings including the internal memory storage. It'll also reinstall the phone firmware.
PS: Once you give this code, there is no way to cancel the operation unless you remove the battery from the phone. So think twice before giving this code.
*#*#34971539#*#* - This code is used to get information about phone camera. It shows following 4 menus:
* Update camera firmware in image (Don't try this option)
* Update camera firmware in SD card
* Get camera firmware version in Lenovo S820
* Get firmware update count
WARNING: Never use the first option otherwise your phone camera will stop working and you'll need to take Lenovo S820 to service center to reinstall camera firmware.
*#*#7594#*#*
This one is favorite one. This code can be used to change the 'End Call / Power' button action in your phone. Be default, if you long press the button, it shows a screen asking you to select any option from Silent mode, Airplane mode and Power off.
You can change this action using this code. You can enable direct power off on this button so you don't need to waste your time in selecting the option.
*#*#225#*#* - Events calendar.
*#*#426#*#* - Debug information for Google Play service.
*#*#759#*#* - Access Google Partner setup (Rlz debug interface).
*#872564# - USB logging control
*#9900# - System dump mode Lenovo S820
*#*#97#*#* - Language and Keyboard settings in Lenovo S820
*#*#46*#*# - Reset Sim in Lenovo S820
*#301279# - HSDPA/HSUPA Control Menu
*#7465625# - View phone lock status
*7465625*638*Code# = Enables Network lock
![Imei Imei](/uploads/1/2/3/7/123750521/495396174.jpg)
*7465625*782*Code# = Enables Subset lock
#7465625*782*Code# = Disables Subset lock
*7465625*77*Code# = Enables SP lock
#7465625*77*Code# = Disables SP lock
*7465625*27*Code# = Enables CP lock
#7465625*27*Code# = Disables CP lock
*7465625*746*Code# = Enables SIM lock
#7465625*746*Code# = Disables SIM lock
*7465625*228# = Activa lock ON
#7465625*228# = Activa lock OFF
*7465625*28638# = Auto Network lock ON
#7465625*28638# = Auto Network lock OFF
*7465625*28782# = Auto subset lock ON
#7465625*28782# = Auto subset lock OFF
![Lenovo s850 no service Lenovo s850 no service](/uploads/1/2/3/7/123750521/845072229.jpg)
#7465625*2877# = Auto SP lock OFF
*7465625*2827# = Auto CP lock ON
#7465625*2827# = Auto CP lock OFF
*7465625*28746# = Auto SIM lock ON
#7465625*28746# = Auto SIM lock OFF
*#*#273283*255*663282*#*#* - This code opens a File copy screen where you can backup your media files e.g. Images, Sound, Video and Voice memo.
*#*#197328640#*#* - This code can be used to enter into Service mode. You can run various tests and change settings in the service mode.
WLAN, GPS and Bluetooth Test Codes:
*#*#232339#*#* OR *#*#526#*#* OR *#*#528#*#* - WLAN test (Use 'Menu' button to start various tests)
*#*#232338#*#* - Shows WiFi MAC address
*#*#1472365#*#* - GPS test
*#*#1575#*#* - For a more advanced GPS test
*#*#232331#*#* - Bluetooth test
*#*#232337#*# - Shows Bluetooth device address in Lenovo S820
*#*#8255#*#* - This code can be used to launch GTalk Service Monitor.
*#*#36245#*#* - Access email debug information.
Codes to get Firmware version information:
*#*#4986*2650468#*#* - PDA, Phone, H/W, RFCallDate
*#*#1234#*#* OR *#1234# - PDA and Phone firmware information
*#*#1111#*#* - FTA SW Version (1234 in the same code will give PDA and firmware version)
*#12580*369# - Software and hardware info
*#9090# - Diagnostic configuration in Lenovo S820
*#*#2222#*#* - FTA HW Version
*#*#44336#*#* - PDA, Phone, CSC, Build Time, Changelist number
Codes to launch various Factory Tests:
*#*#0283#*#* - Packet Loopback
*#*#0*#*#* - LCD display test
*#*#0673#*#* OR *#*#0289#*#* - Melody test
*#*#0842#*#* - Device test (Vibration test and BackLight test)
*#*#2663#*#* - Touch screen version Lenovo S820
*#*#2664#*#* - Touch screen test
*#*#0588#*#* - Proximity sensor test
*#*#3264#*#* - RAM version Lenovo S820
You should know the MTK Baseband (radio) is controlled by the NVRAM which you can find in data/nvram/md/NVRAM/NVD_IMEI and a file call...
You should know the MTK Baseband (radio) is controlled by the NVRAM which you can find in data/nvram/md/NVRAM/NVD_IMEI and a file called MP0B_001.If this file is corrupted / Missing, your IMEI will be gone and you cant connect anymore. I will be providing a download link to my NVRAM BACKUP that works with all MTK DEVICES such as e.g TECNO, GIONEE, INFINIX E.T.C
There are many reasons your phone NVRAM can be corrupted. If you like tweaking your phone and installing custom roms you should backup your phone Nvram sector in a very different folder. A full rom backup is not enough because most of the time, it won't backup your Nvram. In this post i will be providing a solution on how to repair a corrupted phone NVRAM and also repair your IMEI using MTKdroidTools on your pc.
Check out:
[Download] NVram Backup Database File Collections 2019
What is NVRAM
NVRAM is a Modem file built into an android device firmware that is used by the hardware baseband module to read SIMCARD, conect and give network signal through a 15 digit code known as IMEI. An NVRAM error can cause Invalid/Null IMEI number and lost of network Signal.A Corrupted or deleted NVRAM can cause problems like:
1.WiFi related issue and your phone shows “NVRAM WARNING err 0x10” massage in the notification-bar.2.You will get 'NVRAM WARNING: Err=0x10' when you search for other wireless devices, and Even when you see your wireless router and connect to it, it keeps disconnecting.
3.Not detecting SIM card
4.No imei and baseband;
5.Even after restoring the imei using MTK DROID TOOLS, it still do not get network signal.
HOW TO REPAIR OR RESTORE YOUR PHONE NVRAM EVEN IF YOU DON'T BACKUP
STEP 1 : Download the NVRAM BACKUP HERESTEP 2: Download MTK droid tools HERE
STEP 3 : Enable USB Debugging on your Android Device. To enable USB debugging: Open Settings > About Phone > Built Number (Tap on it for 5-8 times). Now, Again go to the Settings > Developer Option > USB Debugging > Tick to Enable.
STEP 4: Connect your Android Device to the computer.
STEP 5: (Important!!!) Move the NVRAM.tar FILE you downloaded to MTKDROIDTOOLS FOLDER check screenshot below
STEP 6: CONNECT YOUR PHONE
STEP 7: Open MTKDroidTools.exe on your computer and wait till it loads your android device information.
STEP 8: Now, in MTK Droid Tools, Click on the Root button to get root permission on your android device.
STEP 9: Now, Click on IMEI/NVRAM button.
STEP 10: Now, click on the Restore button then it will ask you for a .tar or .bin file.
STEP 11: Locate the data NVRAM.TAR file you downloaded from BackupNVRAM folder and your NVRAM data will be restored instantly.
You can check out the video below for more:
How To Restore Your Original Phone Imei Back MTK droid tools:
STEP 1. Download MTK droid toolsSTEP 2. Download PdaNet
STEP 3. Enable USB debugging on the phone then connect it to the PC (don't enable mass storage)
STEP 4. Install PdaNet on the PC with the phone connected; you should get a message saying drivers installed successfully.
STEP 5. Extract then launch MTK droid tools on the PC (still with phone connected to PC)
STEP 6. MTK droid tools should detect and display your phones details
STEP 7. Click on IMEI/NVRAM
STEP 8. Supply the IMEI(s) then click replace
STEP 9. Restart your phone if it isn't automatically restarted
STEP 10. Your IMEI issue should have been resolved.
You Can Request more NVRAM Backup or ask any questions in the comment section below thanks.
Simple Method To Backup And Restore Your Mtk IMEI Using Recovery
This tool can backup your current nvram(IMEI+WIFI MAC) folder from data partition to external sdcard & can restore it in any ROM. This is useful when wiping data partition.- Download MTK Nvram Tool Here
- Copy downloaded zip into Sdcard
- Reboot into recovery ( Any custom recovery like Cwm/Twrp)
- Choose install zip from Sdcard
- Select MTK Nvram Tool
- Done
How To Restore Your Phone Imei If You Didn't Backup
If you get invalid/null imei after flashing a new custom rom and you didn't backup up you working imei, there is a little tool that can help you fix this. You just have to reboot to recovery and flash it, follow this simple steps:
- Download IMEI Fix Tool Here
- Copy downloaded zip into Sdcard
- Reboot into recovery ( Any custom recovery like Cwm/Twrp)
- Choose install zip from Sdcard
- Select IMEI Fix.zip
- Done
Download MTK NVram Backup File
Collections of NVram and Tar /Bin Backups file you can download and Restore using Using SP Flash Tool, MTK Droid tools NVRAM, TWRP recovery NVRAM or Miracle Box NVRAM backups & Permanent Fix Invalid IMEI Error, WIFI and 3G / WCDMA only issue on all MediaTek, Qualcomm and Spreadtrum device android Smartphones.Click to Download Your NVram Backup File