[FS#1227] Brick in TP-Link CPE210 HW 1.1 after sysupgrade from LEDE-17.01.1 to LEDE-17.01.4

[LEDE Bugs]

The following task has a new comment added:

FS#1227 - Brick in TP-Link CPE210 HW 1.1 after sysupgrade from LEDE-17.01.1 to LEDE-17.01.4
User who did this - Florian Beier (Handle)

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Can you attach a serial console? I think the output would be helpful to see what is going on.
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More information can be found at the following URL:
https://bugs.openwrt.org/index.php?do=details&task_id=1227#comment4335