Just to clarify, it's not Recovery Mode. It's Factory Mode - the one that comes up with (VOL.Down + Power) on Infinix Hot Note X551.... stock recovery mode works fine with (Vol.Up + Power)
I remember I saw it working before having the phone flashed with "Format All + Download" due to the state when phone was dead at all and "Firmware Upgrade" option was failing to flash.
After full formatting, the phone actually had issues with NVRAM/IMEI etc. but I got that fixed with SN Write Tool and everything is working fine.
The problem is that it can't load in Factory Mode. I am not sure if the "full format" caused the issue but I just wonder if it can be fixed or not. I have done re-flashing multiple times with and without "Format All".
Currently when (Volume.Down + Power] button pressed. The Factory Mode indeed initiates with a yellow Factory Mode title on the top-left corner of black screen. It stays for 2 or 3 seconds but then following comes up, instead of Factory Mode options.
Quote:rf calibration flag Test
RF calibration test fail
PLS Retest RF