I apologize for the extremely late reply and as to answer your question, you posted your calibration two posts prior within your environment dump ie. goi_config.
https://forum.openwrt.org/t/support-ma5671a-sfp-gpon/48042/103
Just rewrite it back into your environment with
fw_setenv goi_config "begin-base64 644 goi_config@H4sIADKi1VgCA+1YS2/TQBDOlfyKRRxywt332lgcCi2oahFVE6WHClkbe5NY@xNnIdqH8e2adpnEStyAeES2eiyfz2BnP7rczjinjA7so0/hgYtOo1KOZiWa6@MHmUm3E0As6Liy+d3yIMJDmvnkDbT0wU7hCGpWCUYCI6ICDwQLizB7ouSp0j@1MmtLR+y+5H+kdILdGTR3JYonur5xKByatDg28KgNDHzMh2nJn8ehmHXyV6f@HfaPL6KL43dO8gINTLZAV6efQnRSTtHV9SFw/WNgLg8yx2tY76r41GUkCKXH@Aj8kPvcEwSHudlr6J8g8hP/fh/4v4l8Sylr8PzL8Zy3+nwb+v+hFEo2SP4T+@n8A/ruGfgZwIwWWL//3gP9nAv8P5LdqHh+dH0ZujFdJDNISWgK6GAGhKQuZ7@PqUtjp8U/uHG/gsxHMaVEPfiH26ACv9cKCWBx4Qq2c7/eyHcQuC/x39s5+N0@Ul0AS3a/+KcCZoO7/i9c/2eStvjfC3WXO45g81FvMrMjPet1n7mOYOforZ6l@o1w7fpBmBioFA3+PYhK8xOwl9geEvSJ+iIo4TxclGipPejxEH98enrkfwiMh@ene5ZFmvuxErd+NGsSUsYc4wEPA6N8tZtFgnU40jRaxn1T9TM/sV9bAH5+o+@i2k6md6ZbERJ4iSOYMbdDg4pFVlalia/RxMt7FenXAU8xxFGPaL8mog4EYP5@dWuNzM7T0tacB6l+r9N5dH7m1ljLP8BL1Aq/1LMmP7Ih3/UDPW3yoz/woxt+@R1BQqCe+TYRxsaMjdzrc6AeJEMaDRr9K56tGP+p0Qjb6VTpZ91snGeBN8W1+@vtws8025lGOP+kzA/UMD+Ehdm5xkNnEnablDvkcFU4FSAWa7UV2tabAb1r2e@pHI3rlN4kgZYYaqAmsKCTeD5EpLyCVG44WWrKjSEBbmSfDeq23qPUyYZxJVE@NkUFG+4F8NEecCx8wbcPstEF4DMz87IGPXwaDdznQY9QUTsggxUcXZW5T7FS@lBDCa+frot8/iQgPcKLzzytTaAuCQw6SY2gFDcb1dQmFlUVAwLTBcqFzPbKz@NF6ZQxJUYcy5pNuXks2utyQjW+j1omfWLj7YxFQA2bAbx0W6tns/7EOkmzG0@NLBrp4yWWmrpX6TvvTGOxwAcAAA=@====@"
And finally execute /etc/init.d/recover_goi.sh
Otherwise there is /opt/lantiq/bin/ocal but I haven't had the need to delve into it.