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How can I replace my grand s software

My grabd S is not booting .It only shows the ZTE sign and it stops there

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Press down Vol power + home for download mode. Instal USB drivers, connect to Odin select correct rom and hit reset . Suggest please follow instructions on XDA developer website and get the Roms there and before you must try to hard reset the phone only wipe cache and data by switching the phone off leave it for 5 -10 secs then press together all the buttons , Vol + power and home this will give you option to wipe cache and data. Hope it will fix your phone.

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Afolarin Adio crwdns2934231:0crwdne2934231:0
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