symphony h250 stock firmwaer MT6735
Mobile Flash solution
MTK CPU:
1. Firstly setup the MTK USB driver your pc.( Download MTK Driver)
2. Connect the mobile to pc using USB data cable. Mobile must be switched off and disconnect the battery from mobile.Device Brand : Symphony
Device Model : H250
Device CPU : MT6735
Device IntName : H250
Device Version : 5.1
Device Compile : 3/15/2016 11:03:00 AM
Device Project : ALPS.L1.MP3.V2_DWAV6735.65U.O.L1_P2
Device ExtInfo : H250
password link = http://sksoha.com/single.php?id=39&cat=8
3. No need to press the boot key to connect for flash. (symphony h250 Firmwaer Download Link ).