DS-7204HQHI-SH can its firmware be downgraded? anyone know for sure?

smilybri

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hi i have DS-7204HQHI-SH dvr with firware V3.1.3 build 150317 i got it june 2015 it has line crossing detection etc and all works fine sending pictures via email etc so i am not doing anything to change that! however a mate has just bought a new DS-7204HQHI-SH dvr and 3 cameras (all hikvision) it has newer firmware V3.3.1 build 151016 than mine otherwise is identical, however his will only send picture attachments on motion detection but only sends an email without any pic attachments, i have talked to the seller a place based in wigan i think and the guy there is very helpful but informs me it wont send pics on line crossing he says its the newer firmware that prevents this, he is very knowlegeable and i trust his judgement on it but would anyone know if thats the case then could i flash the unit to the same firmware i have on mine it is in effect a downgrade i asked him about this but he said had not tried to flash older firware so was not sure about it any thoughts ?

thanks in advance

Brian
 

alastairstevenson

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