www.chinaphonearena.com

Hello for everybody. Can you tell me an opinion? These are the phones:
1) iHunt onelove mtk6737t quad 1.5 3gb ram 32 gb rom, room 13 mp and 5 mp ips 5.5 4G dualsim
2) Blackview R6 mtk6737t quad 1.5 3gb ram 32 gb rom, room 13 mp and 5 sqm, ips 5.5 4G dualsim
3) Greentel X7 mtk6737t quad 1.5 3gb ram 32 gb rom, room 16 mp and 8 mp, ips 5.5 4G dualsim
all 3 have android 6.0 greentel is 10 grams. Easier than the other OIS technology to the sensor camera size and identical shapes. First from list is my phone and if I flash a rom from the phone. 2 or 3 on the first may brick him so that he can not flash the original rom. Greentel's Rom looks more optimized from review. I would be willing to try but I would not turn my phone. in a brick. I downloaded the roms from Needrom:
1) iHunt H910BE_V12_P_YX_A10B_ONELOVE_20161205,
2) R6 H910BE_V11_P_YX_A10B_R6_20170324
3) X7 H910BE_V12_P_YX_A10B_greentel_20170502
Can I change something through the files or the text in the scatter file so I can match them?
If i flash, and something is wrong, can i restore back without any problem, or damage the mother board?

Hello for everybody in final i flash to ihunt rom from greentel and also blackview but i not have one tutorial for change imei. I try with engineer mode but not appear CDS information in menu and maui meta not conect the phone. If somebody have any sugestion for root or for instal twrp i want to try.