Null or Invalid IMEI + Unknown Baseband after flashing an MTK phone: Safe checklist a
Null or Invalid IMEI + Unknown Baseband after flashing an MTK phone: Safe checklist a
08-01-2026, 04:16 PM
A common “trending” problem on Hovatek is losing network after flashing a Mediatek device, where the phone shows NULL/Invalid IMEI, Unknown Baseband, or “Emergency calls only,” even though the flash “completed.” Hovatek explains that this usually breaks SIM detection and network signal because IMEI, baseband, and radio data are required for normal communication. (Hovatek) One frequent cause is using the wrong firmware or the wrong SP Flash Tool option (like formatting), which can damage NVRAM/NVDATA and remove the radio configuration.
If you want to avoid it, back up your NVRAM/NVDATA first, use the exact firmware for your build, and avoid “format all” unless you fully understand the risk. If you already have the issue, a typical recovery path is to reflash the correct stock ROM, then restore nvram.bin / nvdata.img using SP Flash Tool as shown in Hovatek’s guide. (Hovatek) You can also keep your helpful tools and guides saved in one spot via GameHub Latest Version.
If you want replies that actually solve it, post these details: exact model number, chipset, current baseband status, what SP Flash Tool option you used, and whether you still see IMEI in *#06# (do not share your full IMEI publicly).
This post was last modified: 22-01-2026, 07:18 PM by hovatek.
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