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Also check with:
AT^NVIMEI? After reboot:
AT+CGSN Should return your restored original IMEI. huawei modem imei repair command
ATI AT+CGMM AT+CGSN Expected response: 15-digit IMEI. If 0 or ERROR – NVRAM corrupt. 5. IMEI Repair Commands (by modem generation) A. Old Huawei modems (E1550, E173, E303) – AT^NVIMEI AT^NVIMEI=<15-digit IMEI> Example: Also check with: AT^NVIMEI