DEAR SIR i have downgrade s5 android 6 to 5 (sm-g900f)

[Android Central Question]

but in the end the big box writes fail and be red &in the mobile phone writes RIRMWARE UPGRADE ENCOUNTERED AN ISSUE .PLEASE SELECT RECOVERY MODE IN KIES AND TRY AGAIN now please say me what I should do with the best re gard

 

[ironass]

but in the end the big box writes fail and be red &in the mobile phone writes RIRMWARE UPGRADE ENCOUNTERED AN ISSUE .PLEASE SELECT RECOVERY MODE IN KIES AND TRY AGAIN now please say me what I should do with the best re gard

Time to start reading...

You will need to download the correct firmware for your model of phone, CSC and Product Code, (see #1.8 of 42 Galaxy S5 models - Dummies Guide), from SamMobile and flash it manually using the PC suite, Odin, using the instructions and links that are shown on each SamMobile firmware download page.