Will GPON Nokia G-010S-A change sn?

Hardware Questions and Recommendations
16

oh man, I think you need to back up before you do something special

and:

For G-010S-A to allow future recovery access
root@SFP:/# fw_setenv bootdelay 5
root@SFP:/# fw_setenv asc0 0
root@SFP:/# fw_setenv preboot

So before G-010S-A running OpenWrt - (14.07_ltq) or OpenWrt - (12.09_ltq).

Why do you want to re-flash fw?