Hi,
I've got a Nubia N1 Lite (NX597J) to mess around with, and wanted to try modifying the ROM. I can enter developer mode and allow bootloader unlocking, adb also works. What I can't do is use USB while booting, or in the recovery menu. No fastboot or sending ROM images via adb to the recovery software. The phone doesn't connect to the computer at all (I'm using Linux, it should at least show up in dmesg). Recovery log says
Code:
musb_pullup 2498: no USB cable, don't need to turn on USB
A couple times, even though the cable is connected and works in Android proper. I've tried USB2 and 3 ports, on a hub and directly on the motherboard. It shows up as 0e8d:2000 MediaTek preloader when turned off and, very briefly, as 0e8d:2008 when booting into recovery.
Am I missing something, or is the recovery image just broken on this phone? I've tried both the EU and US firmware, which is a bit more recent.
Do I need some tool that interacts with the preloader, maybe? I have found this guy who's been messing with a phone that has the same SoC.
Have you managed to get it into recovery mode? I just get a dead android picture :/
I've accidentally broken it by flashing the US ROM but my phone is the EU version. Boots up okay but has lost the IMEI and once the screen turns off won't turn on again - unless I reboot it.
Have so far failed to re-flash with the correct EU ROM - it just fails half-way through.
No, and I'm in the same situation with the firmware.
Related
Anyone know how to kick this tablet out of limbo and get it to boot at all? I accidentally flashed a different preloader on my LeapFrog Epic and while I am still able to get it detected and thus flash firmware images to it using SP Flash Tool v5.1532.00, it is basically unable to switch back to normal mode and kick in the preloader whenever I plug it in whilst the device is off. Tried flashing a known clean backup - still no dice. I know there's a thread about unbricking MTK devices and it does mention the USB COM port issue, but said thread is locked and thus I am forced to make a new one about it. Short of shorting testpoints and such (pun intended ), is there anything else I can do at this point?
Can anyone help?
Hi all,
I wonder if somebody could help me.
At the moment I have a Z5 compact with a broken screen (totally black) and touch. I know it still can boot, because it responds to my fingerprint when booted up. However, it does respond to my finger, but still needs a patern on first boot, which I cannot do on account of the broken touch screen. Also, my computer detects the phone.
I want to access my data, but for that I would have to use the onscreen menu which pops up when I connect the phone with usb. That's impossible.
I looked around on the internet and it is possible to remotely control the screen or access via adb. However, for that I either need to install some app on the phone, enable usb-debugging or authorise access via adb. All of those are impossible.
My phone has un unlocked bootloader and is rooted, so as a last resort I've tried to flash a modified kernel to enable usb debugging by default. This fails. Probably because I make some mistake in modifying the kernel, but I don't know. There's not a lot of response from my phone, as you understand ... Besides, I've absolutely no experience modding myself.
Anybody any idea, please?
So I just fixed the same issue you're having this week. It required opening up the phone.
Basically the ribbon cable that connects the screen to the motherboard had become unseated and needed to be plugged back in for me.
The Z5C isn't the easiest phone to take apart but it's not that difficult either. Just requires some basic tools (Hair dryer, tweezers and some precision screw drivers). There's a bunch of videos showing you how on ifixit or youtube. You just have to go all the way to the part where they flip over the motherboard and unplug the two ribbon cables, one of those two will be the culprit.
This is the first and only phone I've taken apart so any amateur can do this.
Boot to recovery and connect your phone to PC
Nutchos said:
So I just fixed the same issue you're having this week. It required opening up the phone.
Basically the ribbon cable that connects the screen to the motherboard had become unseated and needed to be plugged back in for me.
Click to expand...
Click to collapse
Yes, actually I've had problems with a broken backlight before and opening the phone and re-adjusting the cable solved that. Not in this case however. Thanks for your suggestion, anyways.
mlleemiles said:
Boot to recovery and connect your phone to PC
Click to expand...
Click to collapse
Would recovery provide me with some way to enter my pattern via a PC, e.g. with ADB?
Actually, I'm not sure I had any recovery installed at all. I've tried this before and just tried it again. I press the on/off-button while holding volume down. After that no response whatsoever. My computer does not see any device when connected. I suppose my recovery does not work properly, but without screen I can't be certain.
mlleemiles, you are a _hero_!
After reading your post I decided to try flashing another recovery to try if that might work. Now I can access my files without ever having entered any pattern .
Nevermind that it turns out my files weren't encrypted and I thought they were.
If anyone has a similar problem in the future, this is what worked for me:
My exact situation:
- My phone runs a stock rom (downloaded from XperiCheck) with version 32.4.A.1.54. When my phone was still running ok I had the bootloader unlocked and my device rooted with Rootkernel.
Working solution:
- I downloaded Twrp, version 3.2.1, from this page:
https://forum.xda-developers.com/z5-compact/development/twrp-twrp-3-2-1-z5-compact-t3748952
- Shut down my phone by disconnecting the battery and reconnecting it again
- Started my phone in fastboot mode and flashed recovery to my phone with:
Code:
fastboot flash recovery recovery_suzuran_220218_2.img
- Booted my phone in recovery with volume down + on/off-button.
- Connected my phone to my PC, et voila.
Turns out I can also access my phone with ADB as root, so after backing up the entire internal memory, I might try to get some remote screen tool working.
So thanks for the help and if I find something interesting and new, I'll post that too.
Small update:
After successfully flashing Twrp I backed up the internal memory, so must of the important stuff was safe by then.
However, it turned out that my phone now wouldn't boot into anything other then Twrp. I decided to flash my rom again. First I installed my apb keys using Twrp:
Code:
adb push adbkey.pub /data/misc/adb/adb_keys
It turned out I already had usb debugging enabled.
I then flashed my original firmware again, and connected with adb. This time it connected correctly, without me having to click any dialogue on my phone. I fiddled with several remote control Android tools most of which didn't work. Finally, it turned out Vysor does exactly what I want to do. It is a bit unstable, but workable.
Anyways, I've finally managed to copy all the stuff I wanted from my phone.
Hi folks,
I bought a used X820. Beside camera, which I need to replace, the phone worked well.
I have a fresh clean install of LOS15.1 (I also used AOSIP with same behavior), S30 firmware, mindthegapps, magisk, TWRP3.2.3-1
Since this morning the USB port isn't recognized by any device. No computer, no otg, no car.... The device charges as it should. Not even TWRP sees it.
It is not just "unknown". It's simply not there.
Edit: lsusb doesn't show a device.
I don't think it is a hardware problem. Fastboot mode works.
Edit2:
I can connect the device in fastboot mode and flash (what I did). PC (lsusb) shows the device. Fastboot mode works as it should.
I flashed a totally new system from scratch using Qfil image (from somewhere in the ROM/kernel section) ->Qualcomm Modem works too.
Maybe kernel-related? any ideas how to fix or test?
Thanks for your help.
Jo
Hello, guys.
Recently, I've tried to root a Cubot Power 4G following a guide I found online. I probably should have been more catious about it, cause now the phone is stuck on a bootloop. I tried to install a custom recovery to try and fix this, but as there was no official twrp for Cubot, I once again downloaded something that was probably shady. Thus, now the phone is stuck on bootloop, won't access recovery mode, is now turned off because battery gave out, but if I try to connect it to the pc, it will start to bootloop again. I cannot access adb, or at the least I don't know a way to, since it keeps bootlooping and I have no way to access a recovery mode(since there's no one, or at the least, if there is, it's faulty). What can I do here?
@Giordyman
Re-flash phone's Stock ROM by means od MTK Flash Tool. You have to install the Mediatek VCOM drivers before on your Windows computer, if not done yet.
jwoegerbauer said:
@Giordyman
Re-flash phone's Stock ROM by means od MTK Flash Tool. You have to install the Mediatek VCOM drivers before on your Windows computer, if not done yet.
Click to expand...
Click to collapse
I did! Or so I think... The moment I connect it to the pc, it starts bootlooping and so the pc cannot actually connect there
Bootloop is a situation where you cannot get into the "normal" Android system. Take note that as soon Android logo is shown on phone's display Android kernel got successfully initialized, ADB & Fastboot are ready.
So after updating the phone to miui 11, the file transfer mtp using USB was not working...
Tried everything, installing drivers, changing pc, cable. lit every possible thing...
Finally decided to flash an older version of rom.
it was successful, but still, usb file transfer was not working.
So, thought to install custom rom, and for that, i installed twrp, and by mistake, i cleaned everything including the system.
now, my phone got dead. but still, fastboot bootloader mode was working, So, I tried a different bunch of commands that I found over internet. but nothing worked.
So, again I flashed the stock rom using mi tool, and it broke the last working thing also(fastboot screen).. and my phone stuck in a loop. it just vibrates and turns on-off without any indication on-screen(no Mi logo, no charging light, nothing)...
at last, tried EDL mode, but still no luck, i tried different version of stock rom using EDL mode also. nothing working....
Need help to fix this phone.