@Sunshine Thanks

I have M7200v1 boot loop. Firmware Recovery Tools of M7200v3 solved it.

Sunshine wrote

This Article Applies to:

M7200 V3

M7350 V3/V4/V5/V6.2/V7/V8

M7450 V2/V2.3

M7650(EU) V1.1

 

Phenomenon Description:

The MiFi device is looping on the TP-Link logo during initialization after restarting.

 

Available Solutions:

1. Reset the MiFi device: Hold the reset hole for approximately 10 seconds.
2. Remove the battery, reinsert it, and attempt to turn on the device again.
3. Perform a firmware recovery: Download the relevant firmware recovery tool from the links below:

***Note: Please refer to the included "readme" file in the download links for instructions on performing the firmware recovery process.

M7650(EU) 1.1	M7650V1.1_recoverFirmware
M7450(EU) 2.3	M7450V2.3_recoverFirmware
M7450(EU) 2.0	M7450V2_recoverFirmware
M7350(UE) 8.0	M7350 V8_RecoverFirmware
M7350(UE) 7.0	M7350 V7_RecoverFirmware
M7350(UE) 6.2	M7350 V6.2_RecoverFirmware
M7350(UE) 5.0	M7350 V5_RecoverFirmware
M7350(UE) 4.0	M7350 V4_RecoverFirmware
M7350(UE) 3.0	M7350 V3_RecoverFirmware
M7200(EU) 3.0	M7200V3_recoverFirmware

However, if the above suggestions do not resolve the issue, it is possible that the MiFi device is defective. In such cases, we recommend contacting the retailer from whom you purchased the device or reaching out to the local support team to inquire about warranty options.