Huawei Y600-U20 NVRAM – Fix Invalid IMEI

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How to fix invalid IMEI on Huawei y600-u20. Download Y600-u20 NVRAM file free. Restore Security items to fix the damage.

This is a common issue in Huawei Y500-u20 MTK Devices. These devices lost IMEI after brick revive because these devices contain IMEI in NVRAM Partition. whenever a soft brick or full brick happens its IMEI gets lost. To recover or write IMEI you need a professional tool like Infinity CM2 MTK to restore the NVRAM partition. I will tell you how to do that using the Infinity CM2MT2 tool below.

Contents hide
1 How to Restore Huawei Y600-u20 NVRAM
2 Operation Log
2.1 Related

How to Restore Huawei Y600-u20 NVRAM

Install MTK Drivers and open Infinity CM2MT2 Tool. Power off Huawei and select Memory Tool > Init Device. After initializing, select NVRAM partition, Click on “WR File” and choose nvram.bin. Write partition and reboot your phone. Download the nvram.bin file for Huawei Y600-u20 from below.

HUAWEI_Y600-U20_NVRAM | File Size: 16.16 KB

Now you will see the IMEI Number upon dialing *#06#. Now power off the phone and repair the Original IMEI from Security Tab. This will fix the Invalid IMEI or IMEI 0 problem in your phone

Check here in detail>

Operation Log

Operation : Memory Tool Init [ v2.25 ]

1. Make sure device is powered off. Power off, if need. Wait 20 seconds after
2. Insert USB cable in phone
Waiting for device connection ...

PTFN : MediaTek PreLoader USB VCOM_V1632 (Android) (COM5)
MODE : PRELOADER PORT
PORT : 5
Waiting BOOT ack ...
PRELOADER : ACK confirmed!
BROM : Init BROM
BROM init passed!
     CHIP : MT6572 , SBID : 0x8A00 , HWVR : 0xCA01 , SWVR : 0x0000
     TYPE : LEGACY [MTK]
BROM : SecLevel : 0x00000000
BROM : SecMode  : PLAIN [+PRL]
BROM : BROM|BL  : 0xFF|0x01
BROM : PRELOADER PORT
MODE : 0_base : BASE_v2112 | Manual : Disabled
AGENT : Look for suitable BootChain in DA ... 
AGENT : MTK_AllInOne_DA.bin
AGENT : CHANGE : v2012
AGENT : Found MT6572
AGENT : MTK_DOWNLOAD_AGENT
     BROM : Sending 1st DA ...
BROM : DA sent
BROM :Transfer control to DA ... 
     DA : AGENT started!
NAND : DEVICE NOT FOUND
NAND : 000000000000000000000000
eMMC : OK
eMMC : 484A019064314734A10305044591E611
DAInf: 4 : 2 : 136
     DA : DRAM ready!
DA : BOOT to 2nd DA ...
DA : Receiving HW info

        EMMC: CID : 90014A4834473164040503A111E69145
        EMMC: VEN : HYNIX : OEM : 74 : ID : 483447316404
        EMMC: VEN : HYNIX : H4G1d
        EMMC: SNN : 60887526 ( 0x03A111E6) , MF : 9/2014
        EMMC: 
              BOOT1  : 0x00400000 [ 4.00 MB ]
              BOOT2  : 0x00400000 [ 4.00 MB ]
              RPMB   : 0x00400000 [ 4.00 MB ]
              USER   : 0xE9000000 [ 3.64 GB ]

        SRAM: 0x00020000 [ 128.00 KB ]
        DRAM: 0x20000000 [ 512.00 MB ]

        CHIP : MT6572 , SBID : 0x8A00 , HWVR : 0xCA01 , SWVR : 0x0000 , EVOL : 0x0000

        RNID : A23824331F9D0CCE8212D99F4E9B99

 STATUS : BLANK FLASH
 BSTYLE : EMMC FLASH BOOT

DA : USB : HIGH-SPEED

Boot done!

Set default path : C:\InfinityBox\CM2MT2\phdata\

Ready!

Operation Write Memory

Write selected partitions [1]
[0] Write partition : NVRAM
Write from : C:\Users\H2Five\Desktop\MT6572__HUAWEI__HUAWEI_Y600-U20__HWY600-U__4.2.2__Y600-U20V100R001C435B017 black\Extra_Files\nvram.bin
Write partition Ok!

Operation finished!


Close MemoryTool session

Done!
Elapsed: 00:00:52

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