Unable to boot TWRP.IMG

[Paz9]

Ive downloaded TWRP.img from official site

unlocked BL > fastboot boot twrp.img
i get this error
"failed (remote: 'unknown command')

any ideas?

ive even used the MSM tool to go back to 9.5.3
unlocked BL
rebooted BL and tried "fastboot boot twrp.img" with the same error.

 

[Paz9]

i think if you update to 9.5.8 the bootloader no longer accepts fastboot boot commands.

 

[Bradl79]

Ive downloaded TWRP.img from official site

unlocked BL > fastboot boot twrp.img
i get this error
"failed (remote: 'unknown command')

any ideas?

ive even used the MSM tool to go back to 9.5.3
unlocked BL
rebooted BL and tried "fastboot boot twrp.img" with the same error.

9.5.3 does not have that capability, update to 9.5.4

 

[Paz9]

9.5.3 does not have that capability, update to 9.5.4

i have updated to 9.5.8 via fastboot same problem
ill try 9.5.7 via local updater.

 

[slayerh4x]

Confirmed working on 9.5.4.
Not sure about others yet.

i have updated to 9.5.8 via fastboot same problem
ill try 9.5.7 via local updater.

 

[Paz9]

Confirmed working on 9.5.4.
Not sure about others yet.

ok works on 9.5.7 via local updater
ill try 9.5.8 i think the fastboot updater breaks this functionality somehow because i fastbooted 9.5.7 and it didnt work earlier. but doing it via local updater works.

 

[whatthekj]

Ive downloaded TWRP.img from official site

unlocked BL > fastboot boot twrp.img
i get this error
"failed (remote: 'unknown command')

any ideas?

ive even used the MSM tool to go back to 9.5.3
unlocked BL
rebooted BL and tried "fastboot boot twrp.img" with the same error.

Are you typing in 'twrp.img' or dragging and dropping the actual file into adb?

 

[GUGUITOMTG4]

I tried the command with 9.5.8 and it works well with both CMD and Powershell using minimal ADB files. Looking well, not sure if twrp official is able to boot that way or is meant to be used for just flashing. maybe the one in the guide twrp-3.3.1-29, 30,31 etc-guacamole.img are the ones you should use.

 

[Bradl79]

I tried the command with 9.5.8 and it works well with both CMD and Powershell using minimal ADB files. Looking well, not sure if twrp official is able to boot that way or is meant to be used for just flashing. maybe the one in the guide twrp-3.3.1-29, 30,31 etc-guacamole.img are the ones you should use.

Just tested and I agree. Try the latest Unofficial TWRP

 

[Paz9]

Just tested and I agree. Try the latest Unofficial TWRP

Doesn't work if you flash the rom via fastboot for some reason, flashed via local update and it worked

 

[redpoint73]

Doesn't work if you flash the rom via fastboot for some reason, flashed via local update and it worked

I think this has something to do with slot A/B. I saw other folks having problems with "fastboot boot" for TWRP not working, until they switched slots.

 

[Paz9]

I think this has something to do with slot A/B. I saw other folks having problems with "fastboot boot" for TWRP not working, until they switched slots.

hmm maybe
i just flashed zip in local updater and it worked again.

 

[new_world_2006]

hi guys , how to flash using local updater ? i have the same case i am new

 

[new_world_2006]

Guys , I am new here , I had a stuck in fastboot then using msm tool back to 9.5.3 . I re did the unlock and then whenver I tried to install twrp using fastboot , it shows remote : unknown error

How I can install twrp and magisk ?? And update to 10 ?

I need step by step please . Considering I am on 9.5.3 OEM unlocked but I am unable to use fastboot boot option.

 

[akshay841997]

flash stock rom using fast boot

 

[GeekMcLeod]

Guys , I am new here , I had a stuck in fastboot then using msm tool back to 9.5.3 . I re did the unlock and then whenver I tried to install twrp using fastboot , it shows remote : unknown error

How I can install twrp and magisk ?? And update to 10 ?

I need step by step please . Considering I am on 9.5.3 OEM unlocked but I am unable to use fastboot boot option.

I just got my phone 2 days ago. So I started on 9.5.3 or something. Upgraded to 10 and rooted it by following a guide which is just the usual root method for me but I didn't want to screw anything up.

So I suggest just stay unrooted and upgrade to A10. Then root like normal (fastboot boot twrp, flash twrp zip, flash magisk). That's all I did and I'm having no issues on my phone.