Develop Bugs

Failed to open usb master mode.

I have read lots of threads with the same error, but, after trying various methods, none of it worked for me...
Yesterday I upgrade my hboot from 1.12 to 1.39 (CID BSTAR301).
The firmware is for my CID, but not the same carrier.
So I relock the bootloader, flash firmware.zip on fastboot, unlock the bootloader again....
Until this, everithing was ok, but when I tried to install a rom, I can't access the sdcard via CWM....
Reboot again to fastboot, and I get the error Failed to open usb master mode.
With adb I push Sky Dragon Rom, but I can't access my sdcard from the rom, neither the pc...
I've tried:
- reflashing the firmware
- fastboot oem format (invalid command)
- reflashing everithing
- Use go-mtpfs
And nothing, I just can't access my sdcard, and I don't have a RUU tu reflash it...
Does anyone have any other suggestion???
Thanks in advance...
BTW, the hboot update was succesful, my HOX is now on hboot 1.39

The failed usb master mode error when you enter the bootloader is because the cable is connected. Remove the cable and try all things again.
Now for the sdcard acces, what happens when you mount the sdcard as a diskdrive inside the recovery ?
Try this :
Flash a new custom recovery
Fastboot flash recovery recovery.img
Fastboot erase cache
http://db.tt/z07vyksQ
Try this one (rename it to recovery.img)

Mr Hofs said:
The failed usb master mode error when you enter the bootloader is because the cable is connected. Remove the cable and try all things again.
Now for the sdcard acces, what happens when you mount the sdcard as a diskdrive inside the recovery ?
Try this :
Flash a new custom recovery
Fastboot flash recovery recovery.img
Fastboot erase cache
http://db.tt/z07vyksQ
Try this one (rename it to recovery.img)
Click to expand...
Click to collapse
First, thanks for the answer..
I can mount the 2gb internal memory, but I can't access my 32gb sdcard...
It happens with the old recovery (CWM), and with the new one....
Also, when the phone boots up completely have the same issue...
Yesterday I was trying to send some files via airdroid, but It says that I can't.
Even if I try to format the sdcard, get an error...
Also, adb pus file sdcard pushes the file to the internal memory, not the external one

Strange ! So you select in the recovery the mounts & storage menu - mount as usb storage (last option in the list) nothing comes up in windows ?
Try it with another pc ! Original usb cable, no usb hub ?

Mr Hofs said:
Strange ! So you select in the recovery the mounts & storage menu - mount as usb storage (last option in the list) nothing comes up in windows ?
Try it with another pc ! Original usb cable, no usb hub ?
Click to expand...
Click to collapse
Sorry, didn't try to mount...
After checking it works now, thanks a lot...
I'm thinking in post the firmware to update and this solution, if you agree

Yeah why not ....but mounting the sdcard as an usb diskdrive is standard for at least a year already
All good now ? Good
CASE CLOSED !

I have the same issue, ... but the link is dead ::
"Flash a new custom recovery
Fastboot flash recovery recovery.img
Fastboot erase cache
http://db.tt/z07vyksQ
Try this one (rename it to recovery.img)"
Could you repost it, or put it in google drive, etc. ??? or just tell me which Custom Recovery was ... that worked for that matter please ... =D

hi
i have problem with usb storage on my htc - Failed to open usb master mode its first problem, next in recovery usb storage mode not working, i was instaled new rom and he is not working (stuck on "android is starting") and i dont have backup to reanimate my phone (i know i am moron) so... i dont have any idea how to copy new zip to storage anyone can halp me?
ps. sorry for my english

Botanick1987 said:
hi
i have problem with usb storage on my htc - Failed to open usb master mode its first problem, next in recovery usb storage mode not working, i was instaled new rom and he is not working (stuck on "android is starting") and i dont have backup to reanimate my phone (i know i am moron) so... i dont have any idea how to copy new zip to storage anyone can halp me?
ps. sorry for my english
Click to expand...
Click to collapse
are you flashed the boot.img from rom archive via fastboot?

I was instal zip from recovery. My friend told me that my problem is i dont on debugging before instal zip. Somebody have any idea how i can do that now from fastboot or recovery?

Botanick1987 said:
I was instal zip from recovery. My friend told me that my problem is i dont on debugging before instal zip. Somebody have any idea how i can do that now from fastboot or recovery?
Click to expand...
Click to collapse
The HOX is not S-OFF you need to flash boot.img from fastboot with the command fastboot flash boot bootname.img where bootname is your name of boot.img. Just download fastboot and extract the zip file to c:\fastboot then open cmd go in fastboot with your phone, take the boot.img from your rom.zip paste it in c:\fastboot and then run the command

Thant said:
The HOX is not S-OFF you need to flash boot.img from fastboot with the command fastboot flash boot bootname.img where bootname is your name of boot.img. Just download fastboot and extract the zip file to c:\fastboot then open cmd go in fastboot with your phone, take the boot.img from your rom.zip paste it in c:\fastboot and then run the command
Click to expand...
Click to collapse
error: device nor found or error cannot load 'boot.img' (its name my file)
I have unlocked bootloader
Can u write like to retard idiot step by step with links what i must to do? I am realy tired this situation thx a lot for help
edit: i have in fastboot :
eMMC-bootmode: disabled
CPU- bootmode: disabled
HW secure boot : enabled
after communique: "Failed to open usb master mode" fastboot in red is writed "fastboot usb" but i cant do anything
if this is improtant to solution my problem

Botanick1987 said:
error: device nor found or error cannot load 'boot.img' (its name my file)
I have unlocked bootloader
Can u write like to retard idiot step by step with links what i must to do? I am realy tired this situation thx a lot for help
edit: i have in fastboot :
eMMC-bootmode: disabled
CPU- bootmode: disabled
HW secure boot : enabled
after communique: "Failed to open usb master mode" fastboot in red is writed "fastboot usb" but i cant do anything
if this is improtant to solution my problem
Click to expand...
Click to collapse
First go in bootloader then connect the phone to a PC it is writen so many times

not working "error: cannot load 'boot.img' " now i have cable to connect my hot to pendrive but when i instal previous zip (i was working few days on him) this time also stuck on loading screen. what i can do? pc dont see hox but "fastboot dvices" command reacts correct

Botanick1987 said:
not working "error: cannot load 'boot.img' " now i have cable to connect my hot to pendrive but when i instal previous zip (i was working few days on him) this time also stuck on loading screen. what i can do? pc dont see hox but "fastboot dvices" command reacts correct
Click to expand...
Click to collapse
are you unlocked the bootloader? are you have full battery to flash the boot.img. If first then unlock bootloader if second charge the HOX with the scripot from fastboot

Thant said:
are you unlocked the bootloader? are you have full battery to flash the boot.img. If first then unlock bootloader if second charge the HOX with the scripot from fastboot
Click to expand...
Click to collapse
i am moron but not that much xD i have unlocked bootloader and full charged battery (green diode)

problem solved - i instal stock rom and everything go back to use
A lot of thanks to Thant for patient

hi every one my htc one x is unlocked but i have the same error message : failed to open the usb master mode and i don't know what can i do or what are the steps to follow to flash the htc ..please help me

Help me please :( LineageOS bricked my phone :(

Hello guys
I have a problem
Description:
I have ZUK Z2 and its great phone. I installed latest LineageOS ROM which have OTA updates and yesterday prompt a comunicate that I can update my phone so i clicked to upgrade. But then system is not launching and there is only twrp mode so it's bricked i tried to restore my phone with method described here but it did't work :/ QFIL says" Download Fail: Sahara Fail: QSahara Server Fail: Name of directory is invaid (last one I translated because it was written in my native language). I checked FAQ and i restarted my computer and phone, i changed name of directory to ZUK and it still doesn't work :/ Then I found that ulocked bootloader may be a problem so I tried to lock it but it doesn't work either :/ i wrote adb reboot bootloader and my phone runs fastboot mode but command "fastboot oem lock" don't work, it says only "waiting for device" and nothing happenes :/
Could you help me to unbrick my phone? i'm very desperate

Since you can enter the recovery mode go to mainscreen of twrp, wipe system, data, dalvik etc (but do not wipe internal storage!!!) and then install again lineage, google apps, and addon superuser (in case you want root)...
Regarding QFIL method. I have flashed twice the ZUK orginal software with unlocked bootlader and the bootlader remains unlocked also after the flash. I guess you cannot flash with QFIL and you get the Sahara notice because it is either:
+ you have installed the wrong ZUK drivers or
+ the rom folder name is too long or it is something else.
QFIL method will wipe your entire phone though. So i would try first to wipe with twrp and if it does not work then try QFIL.

Modest Mind said:
Since you can enter the recovery mode go to mainscreen of twrp, wipe system, data, dalvik etc (but do not wipe internal storage!!!) and then install again lineage, google apps, and addon superuser (in case you want root)...
Regarding QFIL method. I have flashed twice the ZUK orginal software with unlocked bootlader and the bootlader remains unlocked also after the flash. I guess you cannot flash with QFIL and you get the Sahara notice because it is either:
+ you have installed the wrong ZUK drivers or
+ the rom folder name is too long or it is something else.
QFIL method will wipe your entire phone though. So i would try first to wipe with twrp and if it does not work then try QFIL.
Click to expand...
Click to collapse
I tried to flash ROMs via twrp like you wrote but still only TWRP starts and nothing else happens :/

Hi, what if I cannot get the the phone connected to CFIL? It always starts into twrp as soon as the phone is connected to the PC and it doesnt matter what buttons I keeped pressed.....

You wrote it wrong, when you try fastboot you need to use "fastboot -i 0x2b4c" otherwise it judt wont work and will always showing "waiting for device" hope you can get futher now.

Sorry, I dont got your point...

Hi
Head for zukfans.eu
Theres a thread and plenty of guides

Yes, there are guides but no one works for me so I came here for help :/ i'm desperate and i don't know what to do now :/

Are you able to boot into twrp? If yes, then wipe system, data, cache and flash rom again. If not, then boot into fastboot mode by holding down both volume button and connect your phone to PC. Once you're in the fastboot mode you have to flash recovery using the
Code:
fastboot -i 0x2b4c flash recovery <recoveryname.img>
, after flashing boot into recovery and allow for system modifications if a dialogue pops up and flash any custom rom with latest gapps (but you still need to wipe system and data) .

This worked for me on the advice of one of the users at zukfans:
Go to TWRP recovery terminal commands, and enter the following:
dd if=/dev/zero of=/dev/block/platform/soc/7464900.sdhci/by-name/misc

Modest Mind said:
Regarding QFIL method. I have flashed twice the ZUK orginal software with unlocked bootlader and the bootlader remains unlocked also after the flash.
Click to expand...
Click to collapse
even after flashing chinese 1.9.044 with QFIL?

Can not enter Recovery Mode

I'm right now in 2.20.40.198 (L). I can't perform Recovery Mode functions. Tried Factory Reset, but no use. Tried placing Firmware.zip in root folder. Update is recognized but on restart there is no change. I can enter the boot menu with the dead android, but when choosing Recovery Mode, the device just gets restarted.
Asus Flash tool throws this error " XXXXXXX_frp_request_server_log.txt (error 5: access is denied.)"
The device seems to be in Fastboot Mode. Shows this:
Product_Name - Z00A
Bootloader Version - unknown
IFWI Version - 0094.1069
Serial Number -
Signing -?
Secure_Boot - ?
ADB recognises the device but when entering "adb reboot bootloader" , I am taken to the same Fastboot Mode.
Help appreciated.

Anyone here who can troubleshoot?
Thanks

hellbraker said:
I'm right now in 2.20.40.198 (L). I can't perform Recovery Mode functions. Tried Factory Reset, but no use. Tried placing Firmware.zip in root folder. Update is recognized but on restart there is no change. I can enter the boot menu with the dead android, but when choosing Recovery Mode, the device just gets restarted.
Asus Flash tool throws this error " XXXXXXX_frp_request_server_log.txt (error 5: access is denied.)"
The device seems to be in Fastboot Mode. Shows this:
Product_Name - Z00A
Bootloader Version - unknown
IFWI Version - 0094.1069
Serial Number -
Signing -?
Secure_Boot - ?
ADB recognises the device but when entering "adb reboot bootloader" , I am taken to the same Fastboot Mode.
Help appreciated.
Click to expand...
Click to collapse
Maybe re install software was having same issue myself followed a guide on you tube I always hard bricked my device managed get it back

hellbraker said:
I'm right now in 2.20.40.198 (L). I can't perform Recovery Mode functions. Tried Factory Reset, but no use. Tried placing Firmware.zip in root folder. Update is recognized but on restart there is no change. I can enter the boot menu with the dead android, but when choosing Recovery Mode, the device just gets restarted.
Asus Flash tool throws this error " XXXXXXX_frp_request_server_log.txt (error 5: access is denied.)"
The device seems to be in Fastboot Mode. Shows this:
Product_Name - Z00A
Bootloader Version - unknown
IFWI Version - 0094.1069
Serial Number -
Signing -?
Secure_Boot - ?
ADB recognises the device but when entering "adb reboot bootloader" , I am taken to the same Fastboot Mode.
Help appreciated.
Click to expand...
Click to collapse
Hello there,
Did you manage to solve it ? I am in same trouble now and searching for help.

[SOLVED] TWRP Bootlop, no ROM installed, fastboot not detected...

SOLVED, the solution is simple, i just quickly installed the adb drivers during the TWRP screen showed up... have to attempt a few times but finally get it to works, then i flashed the rom using fastboot mode
Hey, i was in twrp and i wiped data and system, and it suddenly reboots...
after booting it shows some error messages then it reboots again in loop... i have no OS installed currently
i tried go to fastboot mode, installed adb drivers on 3 different computers each running windows 7, 8, and 10 but still cannot detect the device in fastboot mode...
anyone knows the solution ?? Thanks Before...
If video not show up, heres the link https://www.youtube.com/watch?v=FDQqBLMvD0E
See the attachment to see the error message

- download "P2a42_S048_161111_ROW_fastboot"
- Download this file" flashall.rar"
- Go to the file "P2a42_S048_161111_ROW_fastboot" and unzip it .. !!
- Unzip the file "flashall.rar" and move the file to the folder (P2a42_S048_161111_ROW_fastboot / sw )
Then Install ROM ... by fastboot mode ... and clicking on the flashall file

Permeableaxis5 said:
Don't do this if you don't want to have your phone baseband completely removed meaning no sim card function at all. I did exactly this when trying to install stock room and it deleted my baseband. Luckily I had made a backup a month before that. I restored it from the backup and the phone (sim card) started working again.
Anyways, back to the original issue. So you're saying your phone isn't recognized in fastboot? When I wipe system and data and then go into fastboot and enter "fastboot devices" it shows nothing but I can still flash files into the phone. I'm guessing this is because the phone has no 'name' due to the system wiping. So try going into fastboot on your phone, connect it to PC and open adb, and then enter the command 'fastboot flash recovery twrp.img' (download the latest version of TWRP for Lenovo P2 and rename it to twrp).
If then you are able to enter TWRP after rebooting, download stock Lenovo P2 ROM and flash it.
Click to expand...
Click to collapse
How did you make backup

i have soled it, i will edit the post, thanks for all the help

Question BOOTLOOP Nightmare!!!

Totally stock and stuck in bootloop. Is there a way I can get the data off without erasing it?
I've tried connecting it to the pc but the pc will not recognize it although in fastboot the usb cable is detected by the phone.
I've downloaded the smart and rescue app and it doesn't recognize that the phone is connected.
Recovery mode no longer offers the wipe cache option.
Is there an app on pc or some special commands or something that will allow me to retrieve my data?
Phone is completely stock BTW
TIA
Heruktiang

See if you can get to go into safe mode... may have try more then once.
Something crashed it proper. Any new apps?

If by safe mode you mean recovery mode yes I can. But it offers no solutions that i am aware of. What should I do once in recovery? there is no longer an option to wipe cache.
i just need to copy the data to my pc so i can factory reset it

Use the physical button commands to get into safe mode on boot up.
Sometimes on my Samsung just rebooting from the recovery menu would automatically trigger it to boot into safe mode when it was boot looping.
It's odd you lost the clear the cache option.

yea recent update last week and im sure there is a new app in there.
In fastboot mod my options are :
start
restart bootloader
recovery mode
power off
factory mode
switch console
barcodesbp tools
qcom
bootloader logs
switch tools mode
in recovery mode the options are:
reboot system now
reboot to bootloader
enter fastboot
apply update from adb
"" "" sd card
wipe data/factory reset
mount/system
view recovery logs
run graphics test
run locale test
power off
there must be some way to get the data off