How to restore Compiler after firmware upgrade from 2.1.15 to 2.0.18. Unfortunately I did not take backup before doing the upgrade. Any pointers or How to process will be appreciated. I have already looked at the Firmware upgrade document from 1.1.X to 2.0.15. The Firmware upgrade was done unknowingly (my bad). I need those compilers as I want to install Samba etc.