Can I flash a micromaxq371 sw_0.9 with sw_1…

Yesterday I had One micromax q371hw_1sw_09 I googled for no use and posted this forum for no use …Being afraid of bricking a working phone I returned to the customer telling there is no software available rightnow …after a short while the same person came with his installed with new software(the complaint was unfortunately google has stopped..)workimg fine I lost my face..please some one tell is that possible to flash with sw_0to sw_1 or 2 wont that brick the phone…suggest thanks in advance