Firmware infos:

 Device Brand   : archos
 Device Model   : ac70bhe
 Device CPU     : MT6735
 Device IntName : MTKAC70BHE
 Device Version : 5.1
 Device Compile : 19.10.2015 7:58:40
 Device Project : ALPS.L1.MP3.V1_ELINK8735M.3TB.L_P19
 Device ExtInfo : Archos 70b Helium 

Download:

Archos_70b_Helium_4G.rar

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