Help How to Backup B525s-65a original firmware bago e modify

[hotwalker]

Paano po ba mag backup muna Ng original firmware SA nabiling B525s-65a bago e modify para maibalik Lang Kung sakali?

 

[Matthew Dancer]

Follow ko to. Sana may magturo

 

[pawlow]

sana nga, need ko din malaman. thx

 

[Trezzee]

up sana to