[One (M7) Q&A, Help & Troubleshooting] nkk71:
you are stuck in RUU mode because the ruu flash didnt complete properly, the two version numbers in red indicate you were going from 6.09.401.11 to 6.06.401.1 (this is caused by the hboot pre-update, and not completing the second flash)

furthermore the 4 red triangles, indicate there was a problem with ruu.zip you were flashing, and now bootloader is waiting for you to complete a successful ruu flash.

so let's first get you out of forced ruu mode, download this: https://www.androidfilehost.com/?fid=23501681358549998

fastboot reboot-bootloader
fastboot oem rebootRUU
fastboot flash zip fw_6.06.401.1_custom.zip

it may or may not come back with "FAILED (remote: 90 hboot pre-update! please flush image again immediately)", so do the second flash:

fastboot flash zip fw_6.06.401.1_custom.zip
fastboot reboot-bootloader

it should look something like this:

C:\ADB5_1.0.32>[B][COLOR="Blue"]fastboot oem rebootRUU[/COLOR][/B]
...
(bootloader) Start Verify: 0
OKAY [ 0.050s]
finished. total time: 0.060s

C:\ADB5_1.0.32>[B][COLOR="Blue"]fastboot flash zip 7.15.401.1-Combined_TWRP2840_NoWipe.zip[/COLOR][/B]
target reported max download size of 1514139648 bytes
sending 'zip' (40953 KB)...
OKAY [ 3.490s]
writing 'zip'...
(bootloader) zip header checking...
(bootloader) zip info parsing...
(bootloader) checking model ID...
(bootloader) checking custom ID...
(bootloader) start image[hboot] unzipping for pre-update check...
(bootloader) start image[hboot] flushing...
(bootloader) [RUU]WP,hboot,0
(bootloader) [RUU]WP,hboot,99
(bootloader) [RUU]WP,hboot,100
(bootloader) ...... Successful
[B][COLOR="Red"]FAILED (remote: 90 hboot pre-update! please flush image again immediately)[/COLOR][/B]
finished. total time: 5.100s

second flash, continues the update

C:\ADB5_1.0.32>[B][COLOR="Blue"]fastboot flash zip 7.15.401.1-Combined_TWRP2840_NoWipe.zip[/COLOR][/B]
< waiting for device >
target reported max download size of 1514139648 bytes
sending 'zip' (40953 KB)...
OKAY [ 3.478s]
writing 'zip'...
(bootloader) zip header checking...
(bootloader) zip info parsing...
(bootloader) checking model ID...
(bootloader) checking custom ID...
(bootloader) start image[sbl1-1] unzipping & flushing...
(bootloader) [RUU]UZ,sbl1-1,0
(bootloader) [RUU]UZ,sbl1-1,100
(bootloader) signature checking...
(bootloader) verified fail
(bootloader) ..... Bypassed
(bootloader) start image[sbl1-2] unzipping & flushing...
(bootloader) [RUU]UZ,sbl1-2,0
(bootloader) [RUU]UZ,sbl1-2,100
(bootloader) signature checking...
(bootloader) verified fail
(bootloader) ..... Bypassed
(bootloader) start image[sbl1-3] unzipping & flushing...
(bootloader) [RUU]UZ,sbl1-3,0
(bootloader) [RUU]UZ,sbl1-3,100
(bootloader) signature checking...
(bootloader) [RUU]WP,sbl1-3,0
(bootloader) [RUU]WP,sbl1-3,100
(bootloader) ...... Successful
(bootloader) start image[sbl1-4] unzipping & flushing...
(bootloader) [RUU]UZ,sbl1-4,0
(bootloader) [RUU]UZ,sbl1-4,100
(bootloader) signature checking...
(bootloader) verified fail
(bootloader) ..... Bypassed
(bootloader) start image[sbl1-5] unzipping & flushing...
(bootloader) [RUU]UZ,sbl1-5,0
(bootloader) [RUU]UZ,sbl1-5,100
(bootloader) signature checking...
(bootloader) verified fail
(bootloader) ..... Bypassed
(bootloader) start image[sbl2] unzipping & flushing...
(bootloader) [RUU]UZ,sbl2,0
(bootloader) [RUU]UZ,sbl2,100
(bootloader) [RUU]WP,sbl2,0
(bootloader) [RUU]WP,sbl2,100
(bootloader) ...... Successful
(bootloader) start image[sbl3] unzipping & flushing...
(bootloader) [RUU]UZ,sbl3,0
(bootloader) [RUU]UZ,sbl3,100
(bootloader) [RUU]WP,sbl3,0
(bootloader) [RUU]WP,sbl3,100
(bootloader) ...... Successful
(bootloader) start image[tp] unzipping & flushing...
(bootloader) [RUU]UZ,tp,0
(bootloader) [RUU]UZ,tp,100
(bootloader) ..... Bypassed
(bootloader) start image[tp] unzipping & flushing...
(bootloader) [RUU]UZ,tp,0
(bootloader) [RUU]UZ,tp,100
(bootloader) ...... Successful
(bootloader) start image[tz] unzipping & flushing...
(bootloader) [RUU]UZ,tz,0
(bootloader) [RUU]UZ,tz,100
(bootloader) [RUU]WP,tz,0
(bootloader) [RUU]WP,tz,100
(bootloader) ...... Successful
(bootloader) start image[adsp] unzipping & flushing...
(bootloader) [RUU]UZ,adsp,0
(bootloader) [RUU]UZ,adsp,15
(bootloader) [RUU]UZ,adsp,27
(bootloader) [RUU]UZ,adsp,37
(bootloader) [RUU]UZ,adsp,49
(bootloader) [RUU]UZ,adsp,60
(bootloader) [RUU]UZ,adsp,72
(bootloader) [RUU]UZ,adsp,82
(bootloader) [RUU]UZ,adsp,94
(bootloader) [RUU]UZ,adsp,100
(bootloader) [RUU]WP,adsp,0
(bootloader) [RUU]WP,adsp,100
(bootloader) ...... Successful
(bootloader) start image[cir] unzipping & flushing...
(bootloader) [RUU]UZ,cir,0
(bootloader) [RUU]UZ,cir,100
(bootloader) ...... Successful
(bootloader) start image[pg2fs_spcustom] unzipping & flushing...
(bootloader) [RUU]UZ,pg2fs_spcustom,0
(bootloader) [RUU]UZ,pg2fs_spcustom,22
(bootloader) [RUU]UZ,pg2fs_spcustom,48
(bootloader) [RUU]UZ,pg2fs_spcustom,70
(bootloader) [RUU]UZ,pg2fs_spcustom,97
(bootloader) [RUU]UZ,pg2fs_spcustom,100
(bootloader) ...... Successful
(bootloader) start image[recovery] unzipping & flushing...
(bootloader) [RUU]UZ,recovery,0
(bootloader) [RUU]UZ,recovery,8
(bootloader) [RUU]UZ,recovery,17
(bootloader) [RUU]UZ,recovery,25
(bootloader) [RUU]UZ,recovery,30
(bootloader) [RUU]UZ,recovery,38
(bootloader) [RUU]UZ,recovery,47
(bootloader) [RUU]UZ,recovery,68
(bootloader) [RUU]UZ,recovery,73
(bootloader) [RUU]UZ,recovery,81
(bootloader) [RUU]UZ,recovery,86
(bootloader) [RUU]UZ,recovery,94
(bootloader) [RUU]UZ,recovery,100
(bootloader) [RUU]WP,recovery,0
(bootloader) [RUU]WP,recovery,100
(bootloader) ...... Successful
(bootloader) start image[rpm] unzipping & flushing...
(bootloader) [RUU]UZ,rpm,0
(bootloader) [RUU]UZ,rpm,100
(bootloader) [RUU]WP,rpm,0
(bootloader) [RUU]WP,rpm,100
(bootloader) ...... Successful
(bootloader) start image[radio] unzipping & flushing...
(bootloader) [RUU]UZ,radio,0
(bootloader) [RUU]UZ,radio,5
(bootloader) [RUU]UZ,radio,11
(bootloader) [RUU]UZ,radio,17
(bootloader) [RUU]UZ,radio,23
(bootloader) [RUU]UZ,radio,29
(bootloader) [RUU]UZ,radio,34
(bootloader) [RUU]UZ,radio,40
(bootloader) [RUU]UZ,radio,46
(bootloader) [RUU]UZ,radio,52
(bootloader) [RUU]UZ,radio,58
(bootloader) [RUU]UZ,radio,63
(bootloader) [RUU]UZ,radio,69
(bootloader) [RUU]UZ,radio,75
(bootloader) [RUU]UZ,radio,81
(bootloader) [RUU]UZ,radio,86
(bootloader) [RUU]UZ,radio,92
(bootloader) [RUU]UZ,radio,99
(bootloader) [RUU]UZ,radio,100
(bootloader) [RUU]WP,radio,0
(bootloader) [RUU]WP,radio,23
(bootloader) [RUU]WP,radio,46
(bootloader) [RUU]WP,radio,69
(bootloader) [RUU]WP,radio,92
(bootloader) [RUU]WP,radio,100
(bootloader) ...... Successful
(bootloader) start image[rcdata] unzipping & flushing...
(bootloader) [RUU]UZ,rcdata,0
(bootloader) [RUU]WP,rcdata,0

(bootloader) ...... Successful
OKAY [ 58.061s]
finished. total time: 61.539s

^^ note successful

C:\ADB5_1.0.32>[B][COLOR="Blue"]fastboot reboot-bootloader[/COLOR][/B]
rebooting into bootloader...
OKAY [ 0.040s]
finished. total time: 0.040s

Note, how it

bypasses

things it doesnt need, but all others should say

Successful

.... in your case the ruu.zip flash probably

failed

on some partitions, which will cause the "forced ruu mode", waiting until it's successful.

the above file will downgrade only your firmware to 6.06.401.1, but at least it should get you out of ruu mode

BTW: don't relock bootloader, that's never a good idea in this kind of situation, and for sure do not even THINK about going S-ON !!