[Moto G4 Play Guides, News, & Discussion] awebocarnal:
Yes I flashed the stock firmware according to your guide and I used the commands according to your guide, including flash logo logo.bin

root@hades:platform-tools # ./fastboot devices
ZY223RSFQW fastboot
root@hades:platform-tools # ./fastboot oem fb_mode_set
(bootloader) slot-count: not found
(bootloader) slot-suffixes: not found
(bootloader) slot-suffixes: not found
...
OKAY [ 0.008s]
finished. total time: 0.008s
root@hades:platform-tools # ./fastboot flash partition gpt.bin
(bootloader) slot-count: not found
(bootloader) slot-suffixes: not found
(bootloader) slot-suffixes: not found
(bootloader) has-slot:partition: not found
target reported max download size of 268435456 bytes
sending 'partition' (32 KB)...
OKAY [ 0.004s]
writing 'partition'...
(bootloader) This may take a few seconds, if a
(bootloader) different partition table is being
(bootloader) flashed since we need to backup
(bootloader) and restore a few partitions
(bootloader) Flashing primary GPT image...
(bootloader) Flashing backup GPT image...
OKAY [ 0.730s]
finished. total time: 0.734s
root@hades:platform-tools # ./fastboot flash bootloader bootloader.img
(bootloader) slot-count: not found
(bootloader) slot-suffixes: not found
(bootloader) slot-suffixes: not found
(bootloader) has-slot:bootloader: not found
target reported max download size of 268435456 bytes
sending 'bootloader' (2546 KB)...
OKAY [ 0.084s]
writing 'bootloader'...
(bootloader) flashing sbl1 ...
(bootloader) flashing aboot ...
(bootloader) flashing tz ...
(bootloader) flashing hyp ...
(bootloader) flashing rpm ...
OKAY [ 1.652s]
finished. total time: 1.736s
root@hades:platform-tools # ./fastboot flash logo logo.bin
(bootloader) slot-count: not found
(bootloader) slot-suffixes: not found
(bootloader) slot-suffixes: not found
(bootloader) has-slot:logo: not found
target reported max download size of 268435456 bytes
sending 'logo' (1216 KB)...
OKAY [ 0.042s]
writing 'logo'...
OKAY [ 0.077s]
finished. total time: 0.119s
root@hades:platform-tools # ./fastboot flash boot boot.img
(bootloader) slot-count: not found
(bootloader) slot-suffixes: not found
(bootloader) slot-suffixes: not found
(bootloader) has-slot:boot: not found
target reported max download size of 268435456 bytes
sending 'boot' (16384 KB)...
OKAY [ 0.521s]
writing 'boot'...
OKAY [ 0.442s]
finished. total time: 0.963s
root@hades:platform-tools # ./fastboot flash recovery recovery.img
(bootloader) slot-count: not found
(bootloader) slot-suffixes: not found
(bootloader) slot-suffixes: not found
(bootloader) has-slot:recovery: not found
target reported max download size of 268435456 bytes
sending 'recovery' (16484 KB)...
OKAY [ 0.522s]
writing 'recovery'...
OKAY [ 0.446s]
finished. total time: 0.968s
root@hades:platform-tools # ./fastboot flash system system.img_sparsechunk.0
(bootloader) slot-count: not found
(bootloader) slot-suffixes: not found
(bootloader) slot-suffixes: not found
(bootloader) has-slot:system: not found
target reported max download size of 268435456 bytes
sending 'system' (262141 KB)...
OKAY [ 8.229s]
writing 'system'...
OKAY [ 6.778s]
finished. total time: 15.007s
root@hades:platform-tools # ./fastboot flash system system.img_sparsechunk.1
(bootloader) slot-count: not found
(bootloader) slot-suffixes: not found
(bootloader) slot-suffixes: not found
(bootloader) has-slot:system: not found
target reported max download size of 268435456 bytes
sending 'system' (260732 KB)...
OKAY [ 8.195s]
writing 'system'...
OKAY [ 6.673s]
finished. total time: 14.869s
root@hades:platform-tools # ./fastboot flash system system.img_sparsechunk.2
(bootloader) slot-count: not found
(bootloader) slot-suffixes: not found
(bootloader) slot-suffixes: not found
(bootloader) has-slot:system: not found
target reported max download size of 268435456 bytes
sending 'system' (262142 KB)...
OKAY [ 8.232s]
writing 'system'...
OKAY [ 6.585s]
finished. total time: 14.817s
root@hades:platform-tools # ./fastboot flash system system.img_sparsechunk.3
(bootloader) slot-count: not found
(bootloader) slot-suffixes: not found
(bootloader) slot-suffixes: not found
(bootloader) has-slot:system: not found
target reported max download size of 268435456 bytes
sending 'system' (244219 KB)...
OKAY [ 7.666s]
writing 'system'...
OKAY [ 6.227s]
finished. total time: 13.893s
root@hades:platform-tools # ./fastboot flash system system.img_sparsechunk.4
(bootloader) slot-count: not found
(bootloader) slot-suffixes: not found
(bootloader) slot-suffixes: not found
(bootloader) has-slot:system: not found
target reported max download size of 268435456 bytes
sending 'system' (247022 KB)...
OKAY [ 7.757s]
writing 'system'...
OKAY [ 6.198s]
finished. total time: 13.955s
root@hades:platform-tools # ./fastboot flash system system.img_sparsechunk.5
(bootloader) slot-count: not found
(bootloader) slot-suffixes: not found
(bootloader) slot-suffixes: not found
(bootloader) has-slot:system: not found
target reported max download size of 268435456 bytes
sending 'system' (262141 KB)...
OKAY [ 8.239s]
writing 'system'...
OKAY [ 6.769s]
finished. total time: 15.008s
root@hades:platform-tools # ./fastboot flash system system.img_sparsechunk.6
(bootloader) slot-count: not found
(bootloader) slot-suffixes: not found
(bootloader) slot-suffixes: not found
(bootloader) has-slot:system: not found
target reported max download size of 268435456 bytes
sending 'system' (262142 KB)...
OKAY [ 8.237s]
writing 'system'...
OKAY [ 6.614s]
finished. total time: 14.851s
root@hades:platform-tools # ./fastboot flash system system.img_sparsechunk.7
(bootloader) slot-count: not found
(bootloader) slot-suffixes: not found
(bootloader) slot-suffixes: not found
(bootloader) has-slot:system: not found
target reported max download size of 268435456 bytes
sending 'system' (121236 KB)...
OKAY [ 3.810s]
writing 'system'...
OKAY [ 3.039s]
finished. total time: 6.849s
root@hades:platform-tools # ./fastboot flash oem oem.img
(bootloader) slot-count: not found
(bootloader) slot-suffixes: not found
(bootloader) slot-suffixes: not found
(bootloader) has-slot:oem: not found
target reported max download size of 268435456 bytes
sending 'oem' (122549 KB)...
OKAY [ 3.851s]
writing 'oem'...
OKAY [ 3.168s]
finished. total time: 7.019s
root@hades:platform-tools # ./fastboot flash modem NON-HLOS.bin
(bootloader) slot-count: not found
(bootloader) slot-suffixes: not found
(bootloader) slot-suffixes: not found
(bootloader) has-slot:modem: not found
target reported max download size of 268435456 bytes
sending 'modem' (37056 KB)...
OKAY [ 1.166s]
writing 'modem'...
OKAY [ 1.020s]
finished. total time: 2.186s
root@hades:platform-tools # ./fastboot erase modemst1
(bootloader) slot-count: not found
(bootloader) slot-suffixes: not found
(bootloader) slot-suffixes: not found
(bootloader) has-slot:modemst1: not found
erasing 'modemst1'...
OKAY [ 0.017s]
finished. total time: 0.017s
root@hades:platform-tools # ./fastboot erase modemst2
(bootloader) slot-count: not found
(bootloader) slot-suffixes: not found
(bootloader) slot-suffixes: not found
(bootloader) has-slot:modemst2: not found
erasing 'modemst2'...
OKAY [ 0.014s]
finished. total time: 0.014s
root@hades:platform-tools # ./fastboot flash fsg fsg.mbn
(bootloader) slot-count: not found
(bootloader) slot-suffixes: not found
(bootloader) slot-suffixes: not found
(bootloader) has-slot:fsg: not found
target reported max download size of 268435456 bytes
sending 'fsg' (1500 KB)...
OKAY [ 0.050s]
writing 'fsg'...
OKAY [ 0.066s]
finished. total time: 0.116s
root@hades:platform-tools # ./fastboot erase cache
(bootloader) slot-count: not found
(bootloader) slot-suffixes: not found
(bootloader) slot-suffixes: not found
(bootloader) has-slot:cache: not found
erasing 'cache'...
OKAY [ 0.019s]
finished. total time: 0.019s
root@hades:platform-tools # ./fastboot erase userdata
(bootloader) slot-count: not found
(bootloader) slot-suffixes: not found
(bootloader) slot-suffixes: not found
(bootloader) has-slot:userdata: not found
erasing 'userdata'...
OKAY [ 0.384s]
finished. total time: 0.384s
root@hades:platform-tools # ./fastboot erase customize
(bootloader) slot-count: not found
(bootloader) slot-suffixes: not found
(bootloader) slot-suffixes: not found
(bootloader) has-slot:customize: not found
erasing 'customize'...
OKAY [ 0.013s]
finished. total time: 0.014s
root@hades:platform-tools # ./fastboot erase clogo
(bootloader) slot-count: not found
(bootloader) slot-suffixes: not found
(bootloader) slot-suffixes: not found
(bootloader) has-slot:clogo: not found
erasing 'clogo'...
OKAY [ 0.028s]
finished. total time: 0.028s
root@hades:platform-tools # ./fastboot erase DDR
(bootloader) slot-count: not found
(bootloader) slot-suffixes: not found
(bootloader) slot-suffixes: not found
(bootloader) has-slot:DDR: not found
erasing 'DDR'...
OKAY [ 0.010s]
finished. total time: 0.010s
root@hades:platform-tools # ./fastboot oem fb_mode_clear
(bootloader) slot-count: not found
(bootloader) slot-suffixes: not found
(bootloader) slot-suffixes: not found
...
OKAY [ 0.008s]
finished. total time: 0.008s
root@hades:platform-tools # ./fastboot oem lock
(bootloader) slot-count: not found
(bootloader) slot-suffixes: not found
(bootloader) slot-suffixes: not found
...
(bootloader) Please run fastboot oem lock begin first!
OKAY [ 0.013s]
finished. total time: 0.013s
root@hades:platform-tools # ./fastboot reboot

I saw the error about the oem lock command so I tried the commands I put in my first reply, meaning fastbook oem lock begin and then fastbook oem lock . But I am still seeing the warning image.