Changing the serial number with the sn command is not persistent

[lrjn]

Hello,

I use the SFP on a Telekom FTTH connection. The Telekom OLT expects an ONT with the same serial number as the old one that Telekom installed when providing the connection. If I change the serial number of the SPF with the sn command to that of the old ONT, the connection works. However, with each restart of the SFP, the serial number is reset to the initial value at delivery. Does anyone know a way to store the serial number permanently in to the flash storage?
Of course I could also initiate a rediscovery by Telekom but I would like to keep the old ONT as a backup and that would then no longer work with its serial number.

[Mixxus]

You can change it permanently with the "set" command.
hal -> set sn serial
Same goes for the PLOAM password.
hal -> set password password

[k0xak]

Am trying to simulate Huawei HG8245H on that module.

hal -> set sn HWTCxxxxxxxx is correcly saved and persintent.

However setggings is follower with this message:
Hal# unknow speed mode parameter!
unknow speed mode parameter!

And more important - connection is not working:

admin@SFP:# onu ploamsg
errorcode=0 curr_state=5 previous_state=4 elapsed_msec=698260
admin@SFP:# onu ploamsg
errorcode=0 curr_state=3 previous_state=2 elapsed_msec=740084
admin@SFP:# onu ploamsg
errorcode=0 curr_state=2 previous_state=5 elapsed_msec=766996
admin@SFP:# onu ploamsg
errorcode=0 curr_state=2 previous_state=5 elapsed_msec=773076
admin@SFP:# onu ploamsg
errorcode=0 curr_state=5 previous_state=4 elapsed_msec=790260
admin@SFP:# onu ploamsg
errorcode=0 curr_state=2 previous_state=5 elapsed_msec=797664
admin@SFP:# onu ploamsg
errorcode=0 curr_state=2 previous_state=5 elapsed_msec=797664
admin@SFP:# onu ploamsg
errorcode=0 curr_state=2 previous_state=5 elapsed_msec=797664
admin@SFP:# onu ploamsg
errorcode=0 curr_state=3 previous_state=2 elapsed_msec=801420
admin@SFP:# onu ploamsg
errorcode=0 curr_state=5 previous_state=4 elapsed_msec=802524
admin@SFP:# onu ploamsg
errorcode=0 curr_state=2 previous_state=5 elapsed_msec=803528
admin@SFP:# onu ploamsg
errorcode=0 curr_state=2 previous_state=5 elapsed_msec=803528
admin@SFP:~# onu ploamsg
errorcode=0 curr_state=2 previous_state=5 elapsed_msec=803528

Kernel is priting this message:

Login: SF_SetFeature: Set feature(10) to 1
SF_SetFeature: Set feature(10) to 1
SF_SetFeature: Set feature(10) to 1
SF_SetFeature: Set feature(10) to 1
SF_SetFeature: Set feature(10) to 1
SF_SetFeature: Set feature(10) to 1

any clue?

[great9]

Am trying to simulate Huawei HG8245H on that module.

hal -> set sn HWTCxxxxxxxx is correcly saved and persintent.

first 4 chars are ASCII, the rest are HEX when setting the serial number