TL-MR6400 (EU) Version 5.30 No Service After Upgrade
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Hello
My Router Not Showing Signal 4G LTE Since Upgrade
I have used this Frimware https://static.tp-link.com/upload/firmware/2022/202212/20221219/TL-MR6400(APAC)_V5.30_220506.zip
But My Version TL-MR6400 (EU) Version 5.30
Frimware My Region Not Found
im trying two Sim card from Diffrent ISP But Same Problem
This Log from my router
2018-10-01 00:00:32 [5] 4G: init LTE module, set flowstat [enableDataLimit 0, enablePaymentDay 0, paymentDay 1, limitation 0, warningPercent 90]
2018-10-01 00:00:32 [5] 4G: LTE Module: profile num [1], default profile [1], active profile [0]
2018-10-01 00:00:32 [5] 4G: DM: profile num [1], default profile [1], active profile [0]
2018-10-01 00:00:33 [6] 4G: ERROR: Post event to MOBILE server failed, errno = 2 (No such file or directory).
2018-10-01 00:00:34 [6] 4G: ERROR: Client communication with server failed.
2018-10-01 00:00:34 [6] 4G: ERROR: updateLTE_ISP_File.
2018-10-01 00:00:34 [6] 4G: ERROR: Init raw table success.
2018-10-01 00:00:34 [6] 4G: ERROR: New sms count is 0
2018-10-01 00:00:35 [6] 4G: USER: Mobile device manager (qmi) initialized OK.
Init QMI services......
2018-10-01 00:00:35 [6] 4G: USER: Start get voice service object.
2018-10-01 00:00:35 [6] 4G: USER: VOICE Service Object got.
2018-10-01 00:00:35 [6] 4G: USER: VOICE QMI Client Init successfully, handle is 0x00492700.
2018-10-01 00:00:35 [6] 4G: USER: Mobile device manager (qmi) initialized OK.
2018-10-01 00:00:35 [6] 4G: WARN: Event (0x10000001) not found its logic thread.
2018-10-01 00:00:35 [5] System: Enable IPv4 SPI Firewall
2018-10-01 00:00:35 [5] System: Enable IPv6 SPI Firewall
2018-10-01 00:00:38 [6] 4G: ERROR: 0x00000034 QMI_ERR_DEVICE_NOT_READY
2018-10-01 00:00:38 [6] 4G: ERROR: Set modem mode failed (0).
2018-10-01 00:00:39 [6] 4G: ERROR: [band scan] product band_support_mask: 0x1a0000800c5
2018-10-01 00:00:39 [6] 4G: ERROR: [band scan] product lte_category = 4.
2018-10-01 00:00:39 [6] 4G: ERROR: [band scan] DM band_support_mask: 0x1a0000800c5
2018-10-01 00:00:39 [6] 4G: ERROR: [band scan] DM lte_category = 4.
2018-10-01 00:00:39 [6] 4G: ERROR: [band scan] Modem band seletion : 0x1a0000800c5. config band : 0x1a0000800c5
2018-10-01 00:00:39 [6] 4G: USER: Not registered, searching!
2018-10-01 00:00:39 [6] 4G: WARN: Sim card is inserted.
2018-10-01 00:00:39 [6] 4G: ERROR: 0x00000010 QMI_ERR_NOT_PROVISIONED
2018-10-01 00:00:39 [6] 4G: ERROR: Get sim card number failed (0).
2018-10-01 00:00:41 [6] 4G: ERROR: 0x0000002F QMI_ERR_UNKNOWN
2018-10-01 00:00:41 [6] 4G: ERROR: Failed to get smsc address (0).
2018-10-01 00:00:43 [6] 4G: ERROR: 0x0000002F QMI_ERR_UNKNOWN
2018-10-01 00:00:43 [6] 4G: ERROR: Failed to get smsc address (0).
2018-10-01 00:00:43 [6] 4G: ERROR: 0x0000002F QMI_ERR_UNKNOWN
2018-10-01 00:00:43 [6] 4G: ERROR: Failed to get smsc address (0).
2018-10-01 00:01:43 [6] 4G: WARN: Network selecting failed, mostly rejected.
Today, my device was accessed by the UK support, and I thank the support for the help.
The problem was solved, and it was when updating the firmware.
I am happy, and I am very pleased with the help. The router is back to life again
Thanks Support UK and Mrs Renee 
Today, my device was accessed by the UK support, and I thank the support for the help.
The problem was solved, and it was when updating the firmware.
I am happy, and I am very pleased with the help. The router is back to life again
Thanks Support UK and Mrs Renee