Mostly,after wiping and installing custom ROMs to our devices, we tend to lose nvram which causes baseband unknown, no sim card,IMEI invalid, WiFi and Bluetooth won't function.
Here are simple steps to restore nvram.
-Downloaded NVRAMBACKUP.zip and MTK_Nvram_Tool.zip below to the root of your sdcard.
-Unzip NVRAMBACKUP.zip to the root of your sdcard. You will get a folder named NVRAMBACKUP.
-Do not unzip MTK_Nvram_Tool.zip
-Now boot into recovery mode.
-Install zip from sdcard and select MTK_Nvram_Tool.zip
-Wait for Aroma installer to show up and tick to agree to the terms and conditions.
-Select Next till you see "BACKUP"," RESTORE" and "EXIT".
-Select RESTORE which will alert you that you have a previous nvram backup to restore.
-Select Confirm then exit.
-Reboot device.
-CONGRATULATIONS... NVRAM HAS BEEN RESTORED.
NVRAMBACKUP.zip
MTK_Nvram_Tool.zip
I have a problem, the Aroma installer, show me that I dont have a backup but I have all on the sdcard. What can I do for restore?
ReplyDeleteHi Samuel, you have to extract the NVRAMBACKUP.zip
ReplyDeleteAfter extracting NVRAMBACKUP.zip, you will get a folder named NVRAMBACKUP, copy and paste the NVRAMBACKUP folder to both external SD card and internal storage.
Now,go to recovery and do the restore again.
Thanks.
Backup in thl 4000 is stored in internal not in external sd.just run the MTK_Nvram_Tool.zip fron recovery.run backup and the NVRAMBACKUP folder is created automatic in your internal sd.
ReplyDeletethanks for this tool