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[Q] HTC One (M8) bootloop

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By Vsolon7, Junior Member on 28th April 2014, 03:57 AM
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I flashed a custom rom, and I have TWRP for the recovery mode, I'm assuming its because I didn't wipe the dalvik cache.

It turns on and is on the HTC screen (with powered by android at the bottom, the one it shows when turning on) but it stays on it forever and holding down the power button does nothing, do I just wait for the battery to run out, and boot to recovery and try again?
 
 
28th April 2014, 04:09 AM |#2  
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Quote:
Originally Posted by Vsolon7

I flashed a custom rom, and I have TWRP for the recovery mode, I'm assuming its because I didn't wipe the dalvik cache.

It turns on and is on the HTC screen (with powered by android at the bottom, the one it shows when turning on) but it stays on it forever and holding down the power button does nothing, do I just wait for the battery to run out, and boot to recovery and try again?

to reboot to recovery:

Press and hold Power and volume Up until the phone shuts off
When the screen shuts off, let go of power/volume up and press and hold volume down until bootloader comes up.
Select recovery.
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28th April 2014, 04:29 AM |#3  
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Quote:
Originally Posted by exad

to reboot to recovery:

Press and hold Power and volume Up until the phone shuts off
When the screen shuts off, let go of power/volume up and press and hold volume down until bootloader comes up.
Select recovery.

Okay, that works, I guess its just the ROM that's messed up. I'm going to try a new one and see how that goes
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20th May 2015, 06:02 AM |#4  
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htc m8 bootloop how to solve ?
Have a HTC M8 that stucks in bootlop, here the details
version: 0.5
version-bootloader: 3.19.0.0000
version-baseband: 1.25.21331147A1.06G
version-cpld: None
version-microp: None
version-main: 4.19.166.2
version-misc: PVT SHIP S-ON
product: m8_ul
platform: hTCBmsm8974
modelid: 0P6B10000

I found the correct firmware and flashed it, Flash seems to be successful I see errors concerning sbl1
fastboot flash zip firmware.zip

At the end I see
OKAY [ 20.115s]
finished. total time: 23.271s

I see signature verifly failed sbl1
(bootloader) start image[sbl1] unzipping & flushing...
(bootloader) [RUU]UZ,sbl1,0
(bootloader) [RUU]UZ,sbl1,100
(bootloader) signature checking...
(bootloader) verified fail
(bootloader) ..... Bypassed
(bootloader) current_image_number=4

Here the complete output
< waiting for device >
target reported max download size of 1826418688 bytes
sending 'zip' (52102 KB)...
OKAY [ 3.125s]
writing 'zip'...
(bootloader) adopting the signature contained in this image...
(bootloader) signature checking...
(bootloader) zip header checking...
(bootloader) zip info parsing...
(bootloader) checking model ID...
(bootloader) checking custom ID...
(bootloader) checking main version...
(bootloader) checking hboot version...
(bootloader) total_image_number=12

(bootloader) start image[adsp] unzipping & flushing...
(bootloader) [RUU]UZ,adsp,0
(bootloader) [RUU]UZ,adsp,11
(bootloader) [RUU]UZ,adsp,21
(bootloader) [RUU]UZ,adsp,33
(bootloader) [RUU]UZ,adsp,43
(bootloader) [RUU]UZ,adsp,55
(bootloader) [RUU]UZ,adsp,66
(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=0

(bootloader) start image[boot] unzipping & flushing...
(bootloader) [RUU]UZ,boot,0
(bootloader) [RUU]UZ,boot,11
(bootloader) [RUU]UZ,boot,23
(bootloader) [RUU]UZ,boot,35
(bootloader) [RUU]UZ,boot,48
(bootloader) [RUU]UZ,boot,59
(bootloader) [RUU]UZ,boot,70
(bootloader) [RUU]UZ,boot,81
(bootloader) [RUU]UZ,boot,95
(bootloader) [RUU]UZ,boot,100
(bootloader) [RUU]WP,boot,0
(bootloader) [RUU]WP,boot,99
(bootloader) [RUU]WP,boot,100
(bootloader) ...... Successful
(bootloader) current_image_number=1

(bootloader) start image[recovery] unzipping & flushing...
(bootloader) [RUU]UZ,recovery,0
(bootloader) [RUU]UZ,recovery,6
(bootloader) [RUU]UZ,recovery,12
(bootloader) [RUU]UZ,recovery,19
(bootloader) [RUU]UZ,recovery,26
(bootloader) [RUU]UZ,recovery,32
(bootloader) [RUU]UZ,recovery,38
(bootloader) [RUU]UZ,recovery,52
(bootloader) [RUU]UZ,recovery,57
(bootloader) [RUU]UZ,recovery,63
(bootloader) [RUU]UZ,recovery,70
(bootloader) [RUU]UZ,recovery,77
(bootloader) [RUU]UZ,recovery,83
(bootloader) [RUU]UZ,recovery,89
(bootloader) [RUU]UZ,recovery,97
(bootloader) [RUU]UZ,recovery,100
(bootloader) [RUU]WP,recovery,0
(bootloader) [RUU]WP,recovery,99
(bootloader) [RUU]WP,recovery,100
(bootloader) ...... Successful
(bootloader) current_image_number=2

(bootloader) start image[rpm] unzipping & flushing...
(bootloader) [RUU]UZ,rpm,0
(bootloader) [RUU]UZ,rpm,100
(bootloader) signature checking...
(bootloader) ...... Successful
(bootloader) current_image_number=3

(bootloader) start image[sbl1] unzipping & flushing...
(bootloader) [RUU]UZ,sbl1,0
(bootloader) [RUU]UZ,sbl1,100
(bootloader) signature checking...
(bootloader) verified fail
(bootloader) ..... Bypassed
(bootloader) current_image_number=4

(bootloader) start image[sbl1] unzipping & flushing...
(bootloader) [RUU]UZ,sbl1,0
(bootloader) [RUU]UZ,sbl1,100
(bootloader) signature checking...
(bootloader) verified fail
(bootloader) ..... Bypassed
(bootloader) current_image_number=5

(bootloader) start image[sbl1] unzipping & flushing...
(bootloader) [RUU]UZ,sbl1,0
(bootloader) [RUU]UZ,sbl1,100
(bootloader) signature checking...
(bootloader) ...... Successful
(bootloader) current_image_number=6

(bootloader) start image[sbl1] unzipping & flushing...
(bootloader) [RUU]UZ,sbl1,0
(bootloader) [RUU]UZ,sbl1,100
(bootloader) signature checking...
(bootloader) verified fail
(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) ...... Successful
(bootloader) current_image_number=8

(bootloader) start image[wcnss] unzipping & flushing...
(bootloader) [RUU]UZ,wcnss,0
(bootloader) [RUU]UZ,wcnss,24
(bootloader) [RUU]UZ,wcnss,45
(bootloader) [RUU]UZ,wcnss,68
(bootloader) [RUU]UZ,wcnss,96
(bootloader) [RUU]UZ,wcnss,100
(bootloader) [RUU]WP,wcnss,0
(bootloader) [RUU]WP,wcnss,100
(bootloader) ...... Successful
(bootloader) current_image_number=9

(bootloader) start image[radio] unzipping & flushing...
(bootloader) [RUU]UZ,radio,0
(bootloader) [RUU]UZ,radio,11
(bootloader) [RUU]UZ,radio,18
(bootloader) [RUU]UZ,radio,27
(bootloader) [RUU]UZ,radio,36
(bootloader) [RUU]UZ,radio,44
(bootloader) [RUU]UZ,radio,49
(bootloader) [RUU]UZ,radio,54
(bootloader) [RUU]UZ,radio,62
(bootloader) [RUU]UZ,radio,67
(bootloader) [RUU]UZ,radio,76
(bootloader) [RUU]UZ,radio,81
(bootloader) [RUU]UZ,radio,89
(bootloader) [RUU]UZ,radio,94
(bootloader) [RUU]UZ,radio,100
(bootloader) trying to rename MBA
(bootloader) [RUU]WP,radio,0
(bootloader) [RUU]WP,radio,35
(bootloader) [RUU]WP,radio,71
(bootloader) [RUU]WP,radio,100
(bootloader) ...... Successful
(bootloader) current_image_number=10

(bootloader) start image[rcdata] unzipping & flushing...
(bootloader) [RUU]UZ,rcdata,0
(bootloader) [RUU]WP,rcdata,0
(bootloader) ...... Successful
(bootloader) current_image_number=11

OKAY [ 20.115s]
finished. total time: 23.271s

When I extract the boot.img from firmware.zip and only Flash the boot.img I get following error signature verify fail
fastboot flash boot boot.img
target reported max download size of 1826418688 bytes
sending 'boot' (8782 KB)...
OKAY [ 1.031s]
writing 'boot'...
(bootloader) signature checking...
FAILED (remote: 12 signature verify fail)
finished. total time: 1.375s

Calculating the Image CRC the following Output, is 0x0 for sb2 and sb3 correct ?
rpm: 0xD0AD2083
sbl1: 0xE3DB0B9A
sbl2: 0x0
sbl3: 0x0
tz: 0x7A5540112
radio: 0x53CED4FB
hboot: 0x5E7000B5
boot:: 0x83481B7F
recovery: 0xA92185E2
system: 0xF7612432


Can you give me a hint how to solve the problem ?
Any idea how or where to get RUU Image for version 4.19.166.2 ?
Is it possible to downgrade the Firmware, but how to I know what are previous version to 4 .19.166.2 ?
Is there a way to unlock the device manually (APP can't be used in this Status) and to install a custom ROM ?

Your help is really appreciated, thx.
20th May 2015, 08:49 AM |#5  
xbiggyl's Avatar
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Quote:
Originally Posted by matti68

Have a HTC M8 that stucks in bootlop, here the details
version: 0.5
version-bootloader: 3.19.0.0000
version-baseband: 1.25.21331147A1.06G
version-cpld: None
version-microp: None
version-main: 4.19.166.2
version-misc: PVT SHIP S-ON
product: m8_ul
platform: hTCBmsm8974
modelid: 0P6B10000

I found the correct firmware and flashed it, Flash seems to be successful I see errors concerning sbl1
fastboot flash zip firmware.zip

At the end I see
OKAY [ 20.115s]
finished. total time: 23.271s

I see signature verifly failed sbl1
(bootloader) start image[sbl1] unzipping & flushing...
(bootloader) [RUU]UZ,sbl1,0
(bootloader) [RUU]UZ,sbl1,100
(bootloader) signature checking...
(bootloader) verified fail
(bootloader) ..... Bypassed
(bootloader) current_image_number=4

Here the complete output
< waiting for device >
target reported max download size of 1826418688 bytes
sending 'zip' (52102 KB)...
OKAY [ 3.125s]
writing 'zip'...
(bootloader) adopting the signature contained in this image...
(bootloader) signature checking...
(bootloader) zip header checking...
(bootloader) zip info parsing...
(bootloader) checking model ID...
(bootloader) checking custom ID...
(bootloader) checking main version...
(bootloader) checking hboot version...
(bootloader) total_image_number=12

(bootloader) start image[adsp] unzipping & flushing...
(bootloader) [RUU]UZ,adsp,0
(bootloader) [RUU]UZ,adsp,11
(bootloader) [RUU]UZ,adsp,21
(bootloader) [RUU]UZ,adsp,33
(bootloader) [RUU]UZ,adsp,43
(bootloader) [RUU]UZ,adsp,55
(bootloader) [RUU]UZ,adsp,66
(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=0

(bootloader) start image[boot] unzipping & flushing...
(bootloader) [RUU]UZ,boot,0
(bootloader) [RUU]UZ,boot,11
(bootloader) [RUU]UZ,boot,23
(bootloader) [RUU]UZ,boot,35
(bootloader) [RUU]UZ,boot,48
(bootloader) [RUU]UZ,boot,59
(bootloader) [RUU]UZ,boot,70
(bootloader) [RUU]UZ,boot,81
(bootloader) [RUU]UZ,boot,95
(bootloader) [RUU]UZ,boot,100
(bootloader) [RUU]WP,boot,0
(bootloader) [RUU]WP,boot,99
(bootloader) [RUU]WP,boot,100
(bootloader) ...... Successful
(bootloader) current_image_number=1

(bootloader) start image[recovery] unzipping & flushing...
(bootloader) [RUU]UZ,recovery,0
(bootloader) [RUU]UZ,recovery,6
(bootloader) [RUU]UZ,recovery,12
(bootloader) [RUU]UZ,recovery,19
(bootloader) [RUU]UZ,recovery,26
(bootloader) [RUU]UZ,recovery,32
(bootloader) [RUU]UZ,recovery,38
(bootloader) [RUU]UZ,recovery,52
(bootloader) [RUU]UZ,recovery,57
(bootloader) [RUU]UZ,recovery,63
(bootloader) [RUU]UZ,recovery,70
(bootloader) [RUU]UZ,recovery,77
(bootloader) [RUU]UZ,recovery,83
(bootloader) [RUU]UZ,recovery,89
(bootloader) [RUU]UZ,recovery,97
(bootloader) [RUU]UZ,recovery,100
(bootloader) [RUU]WP,recovery,0
(bootloader) [RUU]WP,recovery,99
(bootloader) [RUU]WP,recovery,100
(bootloader) ...... Successful
(bootloader) current_image_number=2

(bootloader) start image[rpm] unzipping & flushing...
(bootloader) [RUU]UZ,rpm,0
(bootloader) [RUU]UZ,rpm,100
(bootloader) signature checking...
(bootloader) ...... Successful
(bootloader) current_image_number=3

(bootloader) start image[sbl1] unzipping & flushing...
(bootloader) [RUU]UZ,sbl1,0
(bootloader) [RUU]UZ,sbl1,100
(bootloader) signature checking...
(bootloader) verified fail
(bootloader) ..... Bypassed
(bootloader) current_image_number=4

(bootloader) start image[sbl1] unzipping & flushing...
(bootloader) [RUU]UZ,sbl1,0
(bootloader) [RUU]UZ,sbl1,100
(bootloader) signature checking...
(bootloader) verified fail
(bootloader) ..... Bypassed
(bootloader) current_image_number=5

(bootloader) start image[sbl1] unzipping & flushing...
(bootloader) [RUU]UZ,sbl1,0
(bootloader) [RUU]UZ,sbl1,100
(bootloader) signature checking...
(bootloader) ...... Successful
(bootloader) current_image_number=6

(bootloader) start image[sbl1] unzipping & flushing...
(bootloader) [RUU]UZ,sbl1,0
(bootloader) [RUU]UZ,sbl1,100
(bootloader) signature checking...
(bootloader) verified fail
(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) ...... Successful
(bootloader) current_image_number=8

(bootloader) start image[wcnss] unzipping & flushing...
(bootloader) [RUU]UZ,wcnss,0
(bootloader) [RUU]UZ,wcnss,24
(bootloader) [RUU]UZ,wcnss,45
(bootloader) [RUU]UZ,wcnss,68
(bootloader) [RUU]UZ,wcnss,96
(bootloader) [RUU]UZ,wcnss,100
(bootloader) [RUU]WP,wcnss,0
(bootloader) [RUU]WP,wcnss,100
(bootloader) ...... Successful
(bootloader) current_image_number=9

(bootloader) start image[radio] unzipping & flushing...
(bootloader) [RUU]UZ,radio,0
(bootloader) [RUU]UZ,radio,11
(bootloader) [RUU]UZ,radio,18
(bootloader) [RUU]UZ,radio,27
(bootloader) [RUU]UZ,radio,36
(bootloader) [RUU]UZ,radio,44
(bootloader) [RUU]UZ,radio,49
(bootloader) [RUU]UZ,radio,54
(bootloader) [RUU]UZ,radio,62
(bootloader) [RUU]UZ,radio,67
(bootloader) [RUU]UZ,radio,76
(bootloader) [RUU]UZ,radio,81
(bootloader) [RUU]UZ,radio,89
(bootloader) [RUU]UZ,radio,94
(bootloader) [RUU]UZ,radio,100
(bootloader) trying to rename MBA
(bootloader) [RUU]WP,radio,0
(bootloader) [RUU]WP,radio,35
(bootloader) [RUU]WP,radio,71
(bootloader) [RUU]WP,radio,100
(bootloader) ...... Successful
(bootloader) current_image_number=10

(bootloader) start image[rcdata] unzipping & flushing...
(bootloader) [RUU]UZ,rcdata,0
(bootloader) [RUU]WP,rcdata,0
(bootloader) ...... Successful
(bootloader) current_image_number=11

OKAY [ 20.115s]
finished. total time: 23.271s

When I extract the boot.img from firmware.zip and only Flash the boot.img I get following error signature verify fail
fastboot flash boot boot.img
target reported max download size of 1826418688 bytes
sending 'boot' (8782 KB)...
OKAY [ 1.031s]
writing 'boot'...
(bootloader) signature checking...
FAILED (remote: 12 signature verify fail)
finished. total time: 1.375s

Calculating the Image CRC the following Output, is 0x0 for sb2 and sb3 correct ?
rpm: 0xD0AD2083
sbl1: 0xE3DB0B9A
sbl2: 0x0
sbl3: 0x0
tz: 0x7A5540112
radio: 0x53CED4FB
hboot: 0x5E7000B5
boot:: 0x83481B7F
recovery: 0xA92185E2
system: 0xF7612432


Can you give me a hint how to solve the problem ?
Any idea how or where to get RUU Image for version 4.19.166.2 ?
Is it possible to downgrade the Firmware, but how to I know what are previous version to 4 .19.166.2 ?
Is there a way to unlock the device manually (APP can't be used in this Status) and to install a custom ROM ?

Your help is really appreciated, thx.

Follow this guide and make sure to repeat the command for flashing the firmware twice.
Wait a couple seconds after the error appears and repeat the command. It will work the second time.
Last edited by xbiggyl; 20th May 2015 at 10:12 PM.
20th May 2015, 03:51 PM |#6  
redpoint73's Avatar
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Quote:
Originally Posted by matti68

I found the correct firmware and flashed it, Flash seems to be successful I see errors concerning sbl1

Can you give me a hint how to solve the problem ?

How are you so sure its the correct firmware? Where did you get it from?

Unless the firmware is signed and encrypted, and matches your CID; then you need s-off to flash it.


Quote:
Originally Posted by matti68

Is it possible to downgrade the Firmware, but how to I know what are previous version to 4 .19.166.2 ?

Yes, its possible, but only with s-off.

I also don't see the point in doing so.
20th May 2015, 07:45 PM |#7  
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Quote:
Originally Posted by xbiggyl

Follow this guide and make sure to repeat the command for flashing the firmware twice.
Wait a couple seconds after the error appears and repeat the command. It will work the second time.

To flash this firmware S-OFF is required and I don't know how to achieve this.

---------- Post added at 08:45 PM ---------- Previous post was at 08:38 PM ----------

Quote:
Originally Posted by redpoint73

How are you so sure its the correct firmware? Where did you get it from?

Unless the firmware is signed and encrypted, and matches your CID; then you need s-off to flash it.




Yes, its possible, but only with s-off.

I also don't see the point in doing so.

Found an OTA update zip on the Internet that contains the firmware.zip. When I flash the firmware.zip the signitature verification succeeds, so for me it seems the firmware is signed and has correct Version otherwise I would get an error.
Besides that if I unlock the device I get an error which is the case if the firmware.zip is signed.
20th May 2015, 10:14 PM |#8  
xbiggyl's Avatar
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Quote:
Originally Posted by matti68

To flash this firmware S-OFF is required and I don't know how to achieve this.

I forgot to include the link to the guide I was pointing you to. I added the link to the post above as well as down below:

http://forum.xda-developers.com/htc-...s-off-t2800727
21st May 2015, 06:24 AM |#9  
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In this case. Can I flash boot.img via flastboot to solve this?
21st May 2015, 04:35 PM |#10  
redpoint73's Avatar
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Quote:
Originally Posted by toanlaptop

In this case. Can I flash boot.img via flastboot to solve this?

Are you running a custom ROM? If so, flashing a custom ROM already flashes boot.img. No need or benefit in doing it separately by fastboot.

Otherwise, its hard to know what exactly is causing the bootloop, and whether flashing boot.img will solve it or not.

And you already said you tried to flash boot.img, and it failed.
Last edited by redpoint73; 21st May 2015 at 04:51 PM.
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