Develop Bugs

[Q] Need help

I recently unlocked my tmobile mytouch 3g slide's bootloader with the htc method and i'm having trouble flashing a recovery with the command prompt fastboot thing. it has:
Code:
c:\Android>fastboot flash recovery recovery.img
sending 'recovery' (4528 KB)...
OKAY [ 0.971s]
writing 'recovery'...
FAILED (remote: image update error)
finished. total time: 0.976s
I've seen people before who have unlocked the bootloader with the htc method do this but did not get the error. Any help would be great thanks.
Update: I'm sorry for being stupid, haha, i found out that the recovery img wasn't compatible with my phone

[Q] Can't upgrade HBOOT?

Now when I try boot into the bootloader it's stuck at "checking for SD card update". How can I fix this? I can't load into a ROM either as I flashed a ROM incompatible with my HBOOT.
EDIT: Unplugged from wall charger and it's OK, phew!
Thanks to this thread: http://forum.xda-developers.com/showthread.php?t=1619747
New question: When I'm entering the commands I keep getting this:
Lukes-MacBook-Pro-2:Fastboot Luke$ ./fastboot-mac oem rebootRUU
... INFOSave data from original MSC...
INFOSave data from SIF...
INFOUpdate partition data to SIF partition
INFOoffset = 0
INFOUpdate partition data from original MSC...
INFOoffset = 0
INFO[MSG] OKAY
OKAY
Lukes-MacBook-Pro-2:Fastboot Luke$ ./fastboot-mac flash zip firmware.zip
sending 'zip' (12876 KB)... OKAY
writing 'zip'... INFOadopting the signature contained in this image...
FAILED (remote: 99 unknown fail)
Lukes-MacBook-Pro-2:Fastboot Luke$
Click to expand...
Click to collapse
How can I get it to work? Do I need S-OFF?

Bump.

Skellyyy said:
Bump.
Click to expand...
Click to collapse
The command wont work first time. do it again ( zip flash)

99 unknown fail is because your bootloader is still unlocked.
Relock it with fastboot oem lock
Then try again.
Sent from my HTC One X using xda app-developers app

bagofcrap24 said:
99 unknown fail is because your bootloader is still unlocked.
Relock it with fastboot oem lock
Then try again.
Sent from my HTC One X using xda app-developers app
Click to expand...
Click to collapse
That worked a treat, now it's working. Should it automatically reboot once the green bar is finished on the black HTC screen? It's just staying there with a full bar right now.
Right have HBOOT 1.39, when I try boot into recovery I get a red triange with a phone underneath it. Tried flashing a recovery via fastboot and get the error:
sending 'recovery' (5742 KB)... OKAY
writing 'recovery'... FAILED (remote: not allowed)
What can I do?
EDIT: Nevermind, I'm stupid. All I had to do was re-unlock the bootloader.

you can do fastboot reboot bootloader and check if the bootloader is updated

fastboot cannot flash

I am unable to flash either a recovery or boot. I get reply with devices , phone is unlocked.
Any idea how to overcome error?
C:\HTC>fastboot flash boot boot.img
sending 'boot' (5106 KB)... OKAY [ 0.618s]
writing 'boot'... INFOFormat partition LNX done
FAILED (remote: err = 0x30000)
finished. total time: 7.429s
C:\HTC>fastboot erase cache
erasing 'cache'... FAILED (remote: err = 0x19000008)
finished. total time: 0.080s
Thanks Fish

Hmm , tried on a different pc same error.
eventually wouldnt boot to recovery.
then bootloader said locked.
factory reset, now unlocked.
tried again still no flash.
left overnight, plugged into usb, flash erase worked and now flashed boot.img
fails on set up wizard stopped working.
will fully charge the try to install sebtinel rom from recovery.

Thread #3
Sent from my HTC One X using XDA Premium 4 mobile app

HTC M4 stuck at cyanogenMod splash screen

I successfully rooted my htc one mini and installed CM11, eventually I dont know what happened and I tried to install Stock ROM.
for this, first I install the stock recovery and then I passes the command "fastboot oem lock"
After that I tried installing stock ROM but it fails, Now I am stuck in bootloader and can not go back to CM11 nor installing stock ROM. currently I am getting ****RELOCKED***. I also tried unlocking it with the key provided by HTCDev.com but it didnt worked
C:\Downloads\Fastboot\Fastboot>fastboot flash unlocktoken Unlock_code.bin
sending 'unlocktoken' (0 KB)... OKAY [ 0.150s]
writing 'unlocktoken'... FAILED (remote: unlock token check failed)
finished. total time: 0.160s
Pleasssssseeee help

TWRP problem, fastboot boot -> unknown command

Hi !
I'm trying to install the custom recovery TWRP on my LG G4, the "fastboot flash recovery (file)" command works :
Sending 'recovery' (6002 KB) OKAY [ 0.166s]
Writing 'recovery' OKAY [ 0.067s]
Finished. Total time: 0.292s
But then the "fastboot boot (file)" command doesn't ! It says :
Sending 'boot.img' (6002 KB) OKAY [ 0.144s]
Booting FAILED (remote: 'unknown command')
By the way when I try to enter into recovery mod using the power+volume down method it asks If I want to do a factory reset, If I say yes it does it, if I say no it just boot normally, no recovery mod.
By bootloader is unlocked, I checked using the "fastboot getvar unlocked" command, and I have the "your device software cannot be checked for corruption, lock the bootloader" screen.
Do you guys know what's the problem ?

Read the official TWRP thread (also linked in my signature)
Sent from my OnePlus 6T using XDA Labs

Thank you for your help, I managed to make it work