Untuk penyebab imei null, invalid imei atau imei tidak valid juga beragam, bisa karena habis flashing, salah firmware dan lainya, jika masalah tersebut terjadi maka kita harus flash ulang namun hanya flash file imei saja (nvram)
Nvram ini hanya untuk mesin jenis chipset spreadtrum , filenya format .bin , bisa flash pakai flashtool Research Download atau upgrade download tool, Nah langsung saja bagi yang membutuhkan nvram advan spd spreadtrum bisa download di bawah ini
Kumpulan Nvram Advan SPD Spreadtrum :
Nvram Advan I4A
Nvram Advan R1E
Nvram Advan R3C
Nvram Advan R3D
Nvram Advan R5C
Nvram Advan S35D
Nvram Advan S35G
Nvram Advan S35H
Nvram Advan S35I
Nvram Advan S3D
Nvram Advan S45C
Nvram Advan S45D
Nvram Advan S4A+
Nvram Advan S4F
Nvram Advan S4i
Nvram Advan S4K
Nvram Advan S4M
Nvram Advan S4P
Nvram Advan S4Q
Nvram Advan S4R
Nvram Advan S4X
Nvram Advan S50
Nvram Advan S50D
Nvram Advan S50F
Nvram Advan S50F MB A2
Nvram Advan S50F 16GB
Nvram Advan S55
Nvram Advan S5E CORE
Nvram Advan S7
Nvram Advan T1G+
Nvram Advan i4c
Nvram Advan i4c 2
Nvram Advan i4c 4gb
Nvram Advan i4d
Nvram Advan i5c
Nvram Advan i5e
Nvram Advan s35
Nvram Advan s35e
Nvram Advan S35F+
Nvram Advan s35f
Nvram Advan s3e
Nvram Advan s45c
Nvram Advan s45d
Nvram Advan s4t (id os)
Nvram Advan s5e nxt
Nvram Advan s5e nxt 2
Nvram Advan S50g
Nvram Advan s6c
Nvram Advan s7a
Nvram Advan s4t snc22h1
Nvram Advan s4t
Nvram Advan S45E
Nvram Advan S50K
Nvram Advan S5E NXT OS 6.0
Nvram Advan S5E 4GS
Nvram Advan S5E-4G
Nvram Advan S4Z
Nvram Advan S4Z PLUS
Nvram Advan I7DNV
Untuk cara mengembalikan imei null bisa baca Cara Mengatasi Imei Null Android SPD Spreadtrum
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