This page is sharing the firmware of NV items of most MediaTek, Spreadtrum, Qualcomm and more chipset devices.
WHAT IS NVRAM DATABASE in MOBILE PHONE FIRMWARE
The NVRAM item is the small part of the firmware of devices are called modem file.
A modem file is a software file to support the hardware baseband module to reading SIM carrier to connect and give a signal to a phone by an identity of every phone via a serial number or we called it IMEI.
IMEI is a 15 digit code that always found indicate on back housing of mobile phone below the name model.
Or you can see it by type a key on all devices *#06# on call dialer of your phone.
If not shown IMEI 15 digit after you type on the dialer, You see on Mobile screen is Invalid IMEI or no IMEI showed, The result is the reading signal of your phone in subscriber is disconnected only emergency call only is only allowed.
The Good result of IMEI is ex. 123456789012345 - 15 digit.
Some problem if your phone show issue on-screen display if no IMEI or Invalid
Emergency call only appear on the screen
Invalid sim but showing the name of SIM network name
Unknown baseband most phone in about menu most of the android phone
No SIM apps even if have SIM inserted.
After writing a Good NVRAM database to the device
If this is still "Unknown Baseband", Try the following I made in my experience.1. Restore factory setting on the menu of the phone
2. Use the Paid tools or Free tool to Fix it, Unknown baseband button
3. If a problem still, Its a module Baseband Hardware problem.
If the problem is "Invalid IMEI" but has a good Baseband in About menu of the device.
1. Write a 15 digit IMEI number same as your phone using IMEI tool.
The NVRAM file firmware needs to flash to phone to prevent this problem. Cause of problem issue as far as I know in my experience. NVRAM files are used to repair INVALID SIM after damaged the security files when @user Full flashed the ROM to a mobile phone, NVRAM firmware is a need to activate the serial number of the mobile phone.
This files were back up in different format use file wisely and write the original IMEI when you want to flash
Warning changing another IMEI of a device is illegal, use the original number of IMEI you can found on the back cover of the mobile phone. I'm not responsible for what comes result after applying the file to the device, Do it at your own Risk.
The NVRAM file is backup from its kind, model for educational purpose only, Do it at your own risk.
Nvram file is back up in different extension.1. *spnv - for Cm2 tools
2. *bin - for NCK , Miracle, others that support bin file.
3. *tar/bin - for MTK droid tools.
4. *APDB - for Maui META 3G tool
5. *Scatter file- for SP flash tool
Mail me if there is an invalid download address and I will fix it. Br. Admin emerlits gsm service
This NVram Blog site is from: http://phoenixemer.blogspot.com