[AT&T HTC One (M8)] jerilmg:
(bootloader) version: 0.5

(bootloader) version-bootloader: 3.19.0.0000

(bootloader) version-baseband: 4.0.U605761@60220A

(bootloader) version-cpld: None

(bootloader) version-microp: None

(bootloader) version-main: 6.20.502.5

(bootloader) version-misc: PVT SHIP S-OFF

(bootloader) serialno: HT515SF******

(bootloader) imei: 352************

(bootloader) imei2: Not Support

(bootloader) meid: 00000000000000

(bootloader) product: m8_wlv

(bootloader) platform: hTCBmsm8974

(bootloader) modelid: 0P6B12000

(bootloader) cidnum: 11111111

(bootloader) battery-status: good

(bootloader) battery-voltage: 0mV

(bootloader) partition-layout: Generic

(bootloader) security: off

(bootloader) build-mode: SHIP

(bootloader) boot-mode: FASTBOOT

(bootloader) commitno-bootloader: 205bdca3

(bootloader) hbootpreupdate: 11

(bootloader) gencheckpt: 0

all: Done!

when i install RUU_M8_UL_M60_SENSE70_ATT_MR_Cingular_US_6.20.502.5_combined

getting error 155

also tried https://www.youtube.com/watch?v=qfCxKnhJzfA

sending 'zip'... (53965 KB) OKAY

sending time = 3.053 secs

writing 'zip'... (bootloader) zip header checking...

(bootloader) shift signature_size for 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

FAIL90 hboot pre-update! please flush image again immediately

FAILED (remote: 90 hboot pre-update! please flush image again immediately)

For "hboot-preupdate" response, restart the same procedure for device HT515SF31765...

sending 'zip'... (53965 KB) OKAY

sending time = 3.072 secs

writing 'zip'... (bootloader) zip header checking...

(bootloader) shift signature_size for header checking...

(bootloader) zip info parsing...

(bootloader) checking model ID...

(bootloader) checking custom ID...

(bootloader) total_image_number=17

(bootloader) start image[sp1] unzipping & flushing...

(bootloader) [RUU]UZ,sp1,0

(bootloader) [RUU]UZ,sp1,99

(bootloader) [RUU]UZ,sp1,100

(bootloader) [RUU]WP,sp1,0

(bootloader) [RUU]WP,sp1,100

(bootloader) ...... Successful

(bootloader) current_image_number=0

(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) current_image_number=1

(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) current_image_number=2

(bootloader) start image[adsp] unzipping & flushing...

(bootloader) [RUU]UZ,adsp,0

(bootloader) [RUU]UZ,adsp,10

(bootloader) [RUU]UZ,adsp,21

(bootloader) [RUU]UZ,adsp,33

(bootloader) [RUU]UZ,adsp,43

(bootloader) [RUU]UZ,adsp,54

(bootloader) [RUU]UZ,adsp,65

(bootloader) [RUU]UZ,adsp,76

(bootloader) [RUU]UZ,adsp,88

(bootloader) [RUU]UZ,adsp,98

(bootloader) [RUU]UZ,adsp,100

(bootloader) [RUU]WP,adsp,0

(bootloader) [RUU]WP,adsp,100

(bootloader) ...... Successful

(bootloader) current_image_number=3

(bootloader) start image[pg2fs_spcustom] unzipping & flushing...

(bootloader) [RUU]UZ,pg2fs_spcustom,0

(bootloader) [RUU]UZ,pg2fs_spcustom,38

(bootloader) [RUU]UZ,pg2fs_spcustom,99

(bootloader) [RUU]UZ,pg2fs_spcustom,100

(bootloader) ...... Successful

(bootloader) current_image_number=4

(bootloader) start image[wcnss] unzipping & flushing...

(bootloader) [RUU]UZ,wcnss,0

(bootloader) [RUU]UZ,wcnss,22

(bootloader) [RUU]UZ,wcnss,46

(bootloader) [RUU]UZ,wcnss,68

(bootloader) [RUU]UZ,wcnss,98

(bootloader) [RUU]UZ,wcnss,100

(bootloader) [RUU]WP,wcnss,0

(bootloader) [RUU]WP,wcnss,100

(bootloader) ...... Successful

(bootloader) current_image_number=5

(bootloader) start image[tp] unzipping & flushing...

(bootloader) [RUU]UZ,tp,0

(bootloader) [RUU]UZ,tp,100

(bootloader) ..... Bypassed

(bootloader) current_image_number=6

(bootloader) start image[tp] unzipping & flushing...

(bootloader) [RUU]UZ,tp,0

(bootloader) [RUU]UZ,tp,100

(bootloader) ..... Bypassed

(bootloader) current_image_number=7

(bootloader) start image[sensor_hub] unzipping & flushing...

(bootloader) [RUU]UZ,sensor_hub,0

(bootloader) [RUU]UZ,sensor_hub,100

(bootloader) [RUU]WP,sensor_hub,0

(bootloader) [RUU]WP,sensor_hub,4

(bootloader) [RUU]WP,sensor_hub,8

(bootloader) [RUU]WP,sensor_hub,12

(bootloader) [RUU]WP,sensor_hub,16

(bootloader) [RUU]WP,sensor_hub,20

(bootloader) [RUU]WP,sensor_hub,24

(bootloader) [RUU]WP,sensor_hub,28

(bootloader) [RUU]WP,sensor_hub,32

(bootloader) [RUU]WP,sensor_hub,36

(bootloader) [RUU]WP,sensor_hub,40

(bootloader) [RUU]WP,sensor_hub,44

(bootloader) [RUU]WP,sensor_hub,48

(bootloader) [RUU]WP,sensor_hub,52

(bootloader) [RUU]WP,sensor_hub,56

(bootloader) [RUU]WP,sensor_hub,60

(bootloader) [RUU]WP,sensor_hub,64

(bootloader) [RUU]WP,sensor_hub,68

(bootloader) [RUU]WP,sensor_hub,72

(bootloader) [RUU]WP,sensor_hub,76

(bootloader) [RUU]WP,sensor_hub,80

(bootloader) [RUU]WP,sensor_hub,84

(bootloader) [RUU]WP,sensor_hub,88

(bootloader) [RUU]WP,sensor_hub,92

(bootloader) [RUU]WP,sensor_hub,96

(bootloader) [RUU]WP,sensor_hub,100

(bootloader) ...... Successful

(bootloader) current_image_number=8

(bootloader) start image[sdi] unzipping & flushing...

(bootloader) ...... Successful

(bootloader) current_image_number=9

(bootloader) start image[sbl1] unzipping & flushing...

(bootloader) signature checking...

(bootloader) verified fail

(bootloader) ..... Bypassed

(bootloader) current_image_number=10

(bootloader) start image[sbl1] unzipping & flushing...

(bootloader) signature checking...

(bootloader) ...... Successful

(bootloader) current_image_number=11

(bootloader) start image[sbl1] unzipping & flushing...

(bootloader) signature checking...

(bootloader) verified fail

(bootloader) ..... Bypassed

(bootloader) current_image_number=12

(bootloader) start image[recovery] unzipping & flushing...

(bootloader) ...... Successful

(bootloader) current_image_number=13

(bootloader) start image[boot] unzipping & flushing...

(bootloader) ...... Successful

(bootloader) current_image_number=14

(bootloader) start image[radio] unzipping & flushing...

(bootloader) trying to rename MBA

(bootloader) ...... Successful

(bootloader) current_image_number=15

(bootloader) start image[rcdata] unzipping & flushing...

(bootloader) ...... Successful

(bootloader) current_image_number=16

OKAY

sending 'zip'... (549729 KB) OKAY

sending time = 22.653 secs

writing 'zip'... FAILproject does not have sa key to decrypt rom

FAILED (remote: project does not have sa key to decrypt rom)

Execution time is 88(s)

i cant access to recovery

when i try to flash twrp

target reported max download size of 1826422784 bytes

sending 'recovery' (20022 KB)...

OKAY [ 2.143s]

writing 'recovery'...

FAILED (remote: not allowed)

finished. total time: 2.159s