The designers of this module left the recovery mode in place. All you have to do is
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Build an interface cable. Similar to MA5671A, but TTL pins are 3 and 6 (instead of 2 and 7) Support MA5671A SFP GPON
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Shorten the pins 4 and 5 temporarily using tweezers or thin wires before connecting the power supply.
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Send modified bootloader(1224ABORT.bin) to the module using XMODEM protocol Support MA5671A SFP GPON
Repair the u-boot environment or switch to working image 0 or 1
FALCON => setenv preboot
FALCON => setenv commit 1
FALCON => setenv next_active 1
FALCON => saveenv
Use this opportunity to back up all your partitions!