Blackview BV6600 - Flashing a new OS, Plz Help - Android Q&A, Help & Troubleshooting

Hi all,
Came by a Blackview BV6600 from someone who gave up on it - shipped saying that the device was 'corrupt and couldn't be trusted'. Went back and forth with their crappy customer service and gave up, sold it to me for cheap. It seems like a decently rugged phone but it does have a lot of bloatware and according to some threads on here about the mfgr I don't know if I trust them too much.
I'd like to wipe this phone, and I'm finding it difficult to locate a generic 'How to' for flashing a new OS to a phone. Disclosure; this is the first time I've done something like this. My experience is with computers, I know phones are a different beast and the user has much less freedom due to specifics of the hardware. If I say anything based on incorrect assumptions please correct me.
Again, what I would like to do is akin to installing Linux on what was a Windows box. I'd like to ****can as much weird chinese bloatware as possible (upto and including the entire OS) and replace it with some basic clean open source software. It seems like LineageOS does not have a version for Blackview phones, nor does it have a generic image. I notice that the Android open source project has 'Generic System Images' https://source.android.com/setup/build/gsi#flashing-gsis which sounds like what I want but references a vbmeta.img file which itself, as far as I can tell searching the forums, is likely manufacturer dependent, maybe phone dependent.
Anyway, I'm taking all the steps I see across enough sites to suggest they are platform-independent and won't brick my phone. Been following this video
since it's relatively recent and addresses my specific manufacturer.
So far I have:
Got developer permissions (go to Settings-About Phone, click build number repetitively)
in Settings-System turned on OEM unlocking and USB debugging
Figured out how to put this phone model in fastboot mode (hold volume up during restart)
Installed ADB and Fastboot (Linux), pinged the phone with "adb devices" and checked it's partitioning with " 'adb shell' <enter> 'getprop ro.build.ab_update' " no output, so that suggests 'A only'.
Next step seems to be:
oem unlock using fastboot. I seem to be having trouble here. In fastboot mode connected via USB, I can't detect the device. "Waiting for any device". 'adb devices' gives no response. No idea why. Phone screen looks exactly like in the video, hooked to USB that did return output for USB devices in normal boot mode.
Once I get over this dumb hump, I think I'll need to find a version of TWRP that will work on my device, install TWRP.
At this point I'm even more at sea: Most places suggest Magisk, but I've also seen explainers to wipe the old OS and install LineageOS.
If anyone has advice on what to do from here, specifically the near-term issue of not being able to find my phone via USB debugging while in fastboot mode, please let me know. But of course, long term I'm gonna need to know how to shovel this **** the phone came with out of storage and replace with a clean install so that is welcome as well.

bump

Related

Is Fastboot a possible option yet on the NT?

I see they are flashing custom files / ROMs on the Kindle Fire using fastboot. I believe we are limited on this due to our current bootloader state, but does anyone with experience with Fastboot know if this may be a possible working option until we can get CWM / recovery ?
I agree, can someone please try this? I've seen romified asking this question several times but no one seems to have tried it. The chances aren't great, but it's definitely worth a try.
might be as simple as "adb reboot fastboot"
and then "fastboot oem unlock" or other commands (I'm not too familiar with them myself)
This harks back to the (not so long ago) days of flashing via fastboot on my HTC Magic, which have since passed since I move onto a SGS II.
Edit: Oops it wasn't romified who asked this previously. Can't remember who it was. But either way, that's not really important.
I have not asked about fastboot yet as I just though of it and did some quick research. I am comfortable hacking roms and decompiling files and what not, but bootloaders and hacking recovery is new to me (for now anyway) As soon as I get to where I can I will dig into it further but if someone knows it isn't going to happen with this bootloader, no need in wasting time on it. It could open the door for other possibilities as well. I tried to get fastboot to recognize my NT but no luck. It was just a quick try though.
Did you manage to get the NT to get into fastboot mode though? Probably using the adb reboot fastboot or adb reboot download command (unless we find the hard button shortcut to it)?
I don't have the Nook Touch yet, but will probably be getting one to play with soon (the gf has her eyes on one). Either way, the more capability unlocked, the better.
If you can get the device into fastboot, it's a matter of looking carefully at the USB device tree and seeing that you have a fastboot device listed, then digging through the strings until you find a string you can use to communicate with the device.
If Fastboot isn't included with the NT, it is available with a number of other software packages.
I know it's part of one of the Lenovo LeTools packages, for instance, which is available for download for Windows hosts. If you get the copy from LeTools, be aware that it will install (or try to) the LeTools.apk that's bundled with it from your computer to any bloody Android device that's attached, not just to Lenovo devices. So you may want to delete LeTools.apk after installing and before connecting your NT.
Or you might want to try leaving it there as an experiment. The apk does some interesting things, one of which is make your device discoverable via wifi, at least if it's a Lenovo branded device.
The release of LeTools I just confirmed fastboot for is available at http://consumersupport.lenovo.com/us/en/DriversDownloads/drivers_show_5004.html release IN12STW151WW5.exe.
You don't need to install everything to get fastboot - you can unzip the installer a couple of times to get to the install.msi file for just the tools.

After flashing wrong system image device doesn't boot

Hello,
I was asked to forward my problem here so here it goes:
Not a long time ago I bought Asus ME302C FHD 10 and tried to root it. I followed a guide but I can't paste link just now.
Anyhow, the guide told me to flash rooted system image. I did every step correctly except that after i rebooted it, my device got stuck on logo screen, sometimes saying "no command".
I would like to undo that by getting unrooted system image for my device or rather get a working rooted system image. I am not sure about other possibilities as I am not experienced in android rooting or anything related. I do have fastboot up and working.
Thank you a lot in advance.
Edit: I figured out that Asus website has factory system images, however I don't really know which one to use because they all are for different countries and I am not sure what device is mine. Is there a way to check parameters of your device without booting it?
Edit2: I messed with the device more and found out that adb doesn't recognize device, as in, running 'adb devices' nothing gets listed. However, 'fastboot devices' does output my device, not sure where the problem is. Also, firmwares listed on asus website are zipped files and I don't know how to flash them. I tried 'fastboot flash system zippedfile.zip' but it would give me an error.
Solved
After few sleepless nights and loads of browser tabs opened I finally managed to fix my device.
All I needed was to use a different SKU firmware from Asus website. Now I can finally boot it thanks to XDA developers team and their useful information on the forums.

Jide Ultratablet ADB-Fastboot Recovery Flash Problem

Where to begin? Logic would dictate, the beginning.
I'll do my best to be brief with the backstory.
Months ago I ordered a Jide Ultratablet to use as my portable workhorse. At first things were peachy until a rather monumental lag began to manifest every 15-45 seconds. It made the device impossible to utilize in any productive fashion, so I contacted Jide and opened up a support ticket. After months (in no way an exaggeration) of barely responsive correspondence, during which I sent them a video to demonstrate the problem, they finally came back to me with an email containing a link to a compressed folder containing the Remix 2.0 images, and also a link to a rather vague and complicated tutorial on how to flash Remix 1.5 manually to a device. (In fact, I tried to include a link to the tutorial, but I am unable to since I haven't posted to the forum enough. I am happy to PM it or email it to anyone who might like to help) I can only assume I am meant to apply the same logic to the Remix 2.0 files they sent me. Seemed a bit dicey at first glance, but while I'm by no means an expert, I'm no slouch in this arena and I'm a very quick study.
Now, on to the proverbial meat and potatoes:
If you were able to contact me for a link to the tutorial in question, you will have undoubtedly seen that they indicate one should use ADB-Fastboot as a means to flash the recovery image. No real surprises there. I have ADB and Fastboot installed on my PC (Windows 10). I also have the ADB drivers installed and have confirmed the addition to my PATH. (eg: ;C:\ADB) I can also confirm that it is working fine since I am able to pull up a terminal and issue the ADB command and it gives me the usual wall of commands. The problem is that my device (Ultratablet) is not being seen by ADB. I have checked my USB drivers and they are all up to date and installed properly. My PC sees the device no problem and there is no indication of any sort of connection error. I've also tried different cables and ports. Yet, I can't access it via ADB and thus am unable to issue commands to my device such as "adb reboot bootloader" or "fastboot reboot-bootloader".
My next logical approach was to attempt forcing the device into fastboot mode using the hardware button combination, which is not listed specifically for the Ultratablet anywhere, I might add. (Power key + Volume up) It brings me to a boot options menu with the selections "Continue/Fastboot Protocol/Recovery Kernel/Reboot/Poweroff/Forced Recovery". Ateempting to select Fastboot Protocol causes the display to shut off for a moment, the device to vibrate once, and then the display to turn back on back at the same menu full of selections.
So, in summary, I am expected to flash the device using fastboot and yet I can't even get the device into fastboot mode, let alone issue commands from my PC terminal. As I highlighted near the beginning, teh Jide support team is incredibly unresponsive and not overly helpful. I have notified them of this same set of issues, but I don't expect to hear back in any expedient fashion and I thought one of the mighty members here on XDA might be able to help me come up with a next step in the meantime. I'd cerainly love to be able to use my shiny new tablet.
In any case, thank you for your time.
Kind regards.
Shaiden
Bump? Anyone? Still swinging in the breeze on this one. No word back from the manufacturer, as expected. =/
I have the same problem
Shaiden said:
Bump? Anyone? Still swinging in the breeze on this one. No word back from the manufacturer, as expected. =/
Click to expand...
Click to collapse
I know it's been 4 years but did you find any solution to this? I'm asking because I have the same problem. I decided to downgrade to Remix OS 1.5 in order to root (I have tried 5 rooting apps with no success) but my device refuses to enter fastboot protocol. The whole idea was since I can't find a way to root the damn thing in its current state maybe I can manage it with its older OS version. All this just to turn it to android root apps "testing ground" device. Oof.

How to unlock the bootloader

I hope this is useful information. It took me a bit to figure it out due to a lot of conflicting information, since the procedure has changed, perhaps several times, since the first version of Android. Also, I'll probably forget myself.
Please note that I've performed these steps on Linux (Specifically Arch Linux). Others have pointed out that if you have issues executing step 7 from Windows, you may need to follow this post.
1. Install Android Studio, or otherwise obtain the latest versions of the adb and fastboot programs. I think Windows users also need to install a USB driver, but I run Linux, so I am not sure about that procedure.
2. Gain access to the developer options on the tablet. Go to the settings, and find the "about tablet" section. Scroll down to the "Software version" section and tap on that several times until it says that you are now a developer. Feel special.
3. Go to the new "Developer options" setting. Select "OEM unlocking." Also, I selected "USB debugging" as a straightforward way to reboot into the boot loader.
4. Connect to the computer on which you've installed adb and fastboot.
5. Type 'adb devices' to see your device listed. The tablet will ask you if you're sure you want to allow the computer access to it. Answer in the affirmative, and save that option.
6. Type 'adb reboot-bootloader' to do just that.
7. After you see the innards of your 'droid, type 'fastboot flashing unlock' . On Linux, you may need root permissions to do this. The tablet will ask you to confirm (select with up/down volume, and accept with the power button), and will then erase all of your data! I didn't worry about this as I'm all on Google services, and so they can be restored easily enough.
Huhu
and where is that for? What can I do after the bootloader is unlocked? Is there any alternative bootloader that I can use then?
Huhu
and where is that for? What can I do after the bootloader is unlocked? Is there any alternative bootloader that I can use then?
Click to expand...
Click to collapse
you are then able to flash another (custom) recovery, which would let you install unsigned zip-files, e.g. in order to get root.
Unfortunately, there is no recovery port by now.
I don't know if one could use the source code on Lenovo's website to port one, if not we would probably need an image dump directly from the device (if I'm not mistaken you need root to dump the recovery image).
I really would like to have root, but it still seems far away unless there's an experienced developer somewhere who owns the device.
I've already thought of starting a bounty thread...maybe enough people are willing to contribute so that developers might feel attracted.
Hello,
Do you think it would be possible to install Windows 10 on our android yoga book?
Thanks,
I faced with one question , when I typed the 'fastboot flashing unlock ', there was nothing occurred except the innards of driod :crying,and I also selected the oem unlocking
(All right, I solved it )
AndyVerne said:
I faced with one question , when I typed the 'fastboot flashing unlock ', there was nothing occurred except the innards of driod :crying,and I also selected the oem unlocking
(All right, I solved it )
Click to expand...
Click to collapse
can you tell me how to deal with it? I met the same problem.
Vsplorer said:
can you tell me how to deal with it? I met the same problem.
Click to expand...
Click to collapse
I used one exe for adb and fastboot which is written by others, and every thing went perfectly.
AndyVerne said:
I used one exe for adb and fastboot which is written by others, and every thing went perfectly.
Click to expand...
Click to collapse
can you tell me where to download the exe? thanks a lot!
Vsplorer said:
can you tell me where to download the exe? thanks a lot!
Click to expand...
Click to collapse
Here is the link of the exe, hope it will be helpful
https://forum.xda-developers.com/showthread.php?t=2588979
AndyVerne said:
Here is the link of the exe, hope it will be helpful
https://forum.xda-developers.com/showthread.php?t=2588979
Click to expand...
Click to collapse
thanks!
Missing Something?
I tried to follow the instructions above, but I might be missing something. After typing in 'adb reboot-bootloader' the Yoga Book reboots into a screen that says 'FASTBOOT MODE.' But when I type 'fastboot flashing unlock' it just says '< waiting for device >' and nothing ends up happening. What am I doing wrong?
jasonccheng said:
I tried to follow the instructions above, but I might be missing something. After typing in 'adb reboot-bootloader' the Yoga Book reboots into a screen that says 'FASTBOOT MODE.' But when I type 'fastboot flashing unlock' it just says '< waiting for device >' and nothing ends up happening. What am I doing wrong?
Click to expand...
Click to collapse
See this post:
https://forum.xda-developers.com/yoga-book/help/missing-usb-driver-cherry-trail-tablet-t3537008
Same here with Linux... The adb devices command shows the device but the flash command ends in 'waiting for device' and thats it. Damn
I relocked the bootloader, sinct then I got following message at the boot screen: bootloader error 01, please contact support.
After that the device is booting android properly. Anybody else experienced this and know how to get rid of the message?
Thx.
carepack said:
I relocked the bootloader, sinct then I got following message at the boot screen: bootloader error 01, please contact support.
After that the device is booting android properly. Anybody else experienced this and know how to get rid of the message?
Thx.
Click to expand...
Click to collapse
It's the price you pay for unlocking the bootloader. Affects many lower end devices, presumably using Intel chips. There is a solution for several devices - check around XDA - but I have not been able to get it to work with the YB.
For what it's worth, I would suggest those tempted to unlock the device and root it to check that you will be able to do what you want to do. Even rooted, I have found it impossible to get rid of the junk apps, so the whole exercise for me has been a waste of time. I'm waiting now to see if Lenovo will release the stock firmware. Until then, the YB is back in its box and I am a bit older and a bit wiser. Lenovo is junk.
carepack said:
I relocked the bootloader, sinct then I got following message at the boot screen: bootloader error 01, please contact support.
After that the device is booting android properly. Anybody else experienced this and know how to get rid of the message?
Thx.
Click to expand...
Click to collapse
i believe, this is due to android's security feature 'verified boot'. it warns that the system was somehow altered and can't be trusted - in other words that it is not an oem stock rom any more.
you might be able to get rid of it by flashing a complete stock rom, but i'm not sure.
zamzenos said:
It's the price you pay for unlocking the bootloader. Affects many lower end devices, presumably using Intel chips. There is a solution for several devices - check around XDA - but I have not been able to get it to work with the YB.
For what it's worth, I would suggest those tempted to unlock the device and root it to check that you will be able to do what you want to do. Even rooted, I have found it impossible to get rid of the junk apps, so the whole exercise for me has been a waste of time. I'm waiting now to see if Lenovo will release the stock firmware. Until then, the YB is back in its box and I am a bit older and a bit wiser. Lenovo is junk.
Click to expand...
Click to collapse
firstly, it has nothing to do with intel or lenovo or low end devices, because secure boot or verified boot is part of android - it is nothing more than a security feature to show whether system integrity (as provided by the vendor) is still valid.
secondly, why is Lenovo junk just because you are not able to get things done? i don't get it. i've already told you that it is possible to get rid of system apps, just use the right tools... e.g. 'Sytstem App Entferner' which definitely works. also i helped you to get your twrp backup working and i was also able to use the newest magisk root (v10.2) immediately, which you said was not possible. so i guess you shouldn't blame others for your shortcomings. the yb might surely have it flaws, bur no more or less than devices of other manufacturers.
danjac said:
i believe, this is due to android's security feature 'verified boot'. it warns that the system was somehow altered and can't be trusted - in other words that it is not an oem stock rom any more.
you might be able to get rid of it by flashing a complete stock rom, but i'm not sure.
firstly, it has nothing to do with intel or lenovo or low end devices, because secure boot or verified boot is part of android - it is nothing more than a security feature to show whether system integrity (as provided by the vendor) is still valid.
secondly, why is Lenovo junk just because you are not able to get things done? i don't get it. i've already told you that it is possible to get rid of system apps, just use the right tools... e.g. 'Sytstem App Entferner' which definitely works. also i helped you to get your twrp backup working and i was also able to use the newest magisk root (v10.2) immediately, which you said was not possible. so i guess you shouldn't blame others for your shortcomings. the yb might surely have it flaws, bur no more or less than devices of other manufacturers.
Click to expand...
Click to collapse
Let me start at the top:
1. My comments on Lenovo are no reflection on the useful tools you have provided us here, for which I have thanked you more than once. So no need to be defensive on that score.
2. If the unlock warning had its source in Android itself, we could expect the warning to bear its logo. I assume it bears the Intel logo because Intel is the author of it. In itself, this is of no importance. What is profoundly irritating is the fact that the security warning is followed by a completely unjustfied 5 second suspension. This is a penalty. Perhaps many do not mind this interference with their use of their devices, but I do. I'm not used to that kind of treatment and I don't take kindly to it.
3. My opinion of Lenovo has always been low, especially since their attempts some years ago to spike their devices with spyware. I regard Lenovo as an exploitative bottom feeder, supplying workaday gear and screwing their customers every way they can for an extra buck or two. I offered the YB to several of my friends. All turned their noses up at the mention of the manufacturer. Don't blame them.
4. If you do want to be of further assistance here, perhaps you can use your obvious technical skills and knowhow to work out how we can replace the Intel penalty with something more benign. I have tried, but can't find where the Intel warning is hidden.
I have downloaded and extracted the apk of the system app remover you mentioned. But until I can get rid of the Intel warning I won't bother to re-root the YB and test if it will clear the junk.
#carepack: at the moment, you must buy the stock firmware (and won't it be expensive!). All part of lenny's screw.
thx to all for youre response. my hope is that with next update the problem will solve by itself. We'll see. I were doin this ooi and was aware of things like that. So no drama for me.
@zamzenos
Buying the stock firmware? Could you provide more info about this?
carepack said:
thx to all for youre response. my hope is that with next update the problem will solve by itself. We'll see. I were doin this ooi and was aware of things like that. So no drama for me.
@zamzenos
Buying the stock firmware? Could you provide more info about this?
Click to expand...
Click to collapse
Yes, that could well do it. But will there be an update? There's a new 12" YB on offer. Could be our 10" version is history already. But we could then hope that they will release the stock.
Re buying the stock: https://forums.lenovo.com/t5/Android-Yoga-Series-Tablets/Lenovo-Yoga-Book-Firmware/td-p/3511903
zamzenos said:
Yes, that could well do it. But will there be an update? There's a new 12" YB on offer. Could be our 10" version is history already. But we could then hope that they will release the stock.
Re buying the stock: https://forums.lenovo.com/t5/Android-Yoga-Series-Tablets/Lenovo-Yoga-Book-Firmware/td-p/3511903
Click to expand...
Click to collapse
According to this:
http://www.androidpolice.com/2016/1...views-cite-software-issues-incredible-design/
We'll receive the nougat Update.
Greetings

I have two secondhand off-brand tablets that may be infected.

Hello! I am new and don't have much experience here, but I will try to post any/all needed info. I don't really know what I am doing, so a customized step-by-step guide would be awesome.
I recently got two tablets from a garage sale. One is an azpenpc model A745 (Build number KVT49L test-keys), and the other is a "Digital2 Plus" (Build number polaris_chiphd-eng 4.4.2 KVT49L 20140515 test-keys) tablet. Both run Android 4.4.2 with kernel 3.4.39.
The Asenpc one has a QuadCore-A33 processor, and the Digital2 one has a DualCore-A23. They are almost identical and have identical physical layout (buttons, camera, speaker...) Developer tools were enabled, but not root, as far as I know. I used factory reset first thing. I will also add that the UX is very unusual, especially on the Digital2 one. (The layout of the black bar that appears on swiping up from the bottom of the screen is unusual and awkward on the D2, and the other one has a hotbar 90* from the horizontal!)
I don't really trust these not to have weird bugs on them. Both have weird apps installed with vague purposes and lots of permissions, the Digital2 tablet has a massive number of un-unistallable factory apps that are total crap, and the AsenPC one has been displaying suspicious surveys in the web browser if I leave it alone too long. For this reason, and to try to get more space (hopefully), I would like to nuke from orbit.
I don't have any money and not much interest invested in these, though I would like them to work when I get done.
How do I install a custom ROM and Google Apps on these? Do ROMs for these exist (especially now that CyanogenMod went OOB), and what would I need to do to be able to install them?
Do I need Root or just an unlocked bootloader, and how do I get those on such unusual devices?
Currently, I think that I need to install the Android SDK, get a custom recovery and unlocked bootloader, and then somehow(?) use the recovery to install the image (never mind how I even get it there for the recovery to install!). There is also some way to do this directly with the SDK. I do not know the real details of how either work.
Thanks! I would really appreciate any help you can offer on how to do this, and extra kudos to anyone who can tell me how to re-arrange the hotbar, hotbar position, and swipe up/down menus too!
I was unable to locate any sections on these two tablets on this forum, or at LineageOS or PacROM. Can you please advise? How do I install a less-bloated and probably safer ROM on these tablets, and where do I actually get it from?
Lets get you started with recovery, unlocking bootloader and root.
Please search if there are roms for you device, and i ll guide on how to install it.
For now, lets get a fresh installation of your device. Sometimes a lot of stupid apps install themselves into the system partition. They are malware. They have un-suspicious names like system process, system monitor, etc. They make the device ectremely laggy and factory reset doesn't help.
Download sdk and platform tools. Just minimal fastboot package will also do.
extract them in say C:\
enable usb debugging
open cmd and do the following. Assuming the folder name is platform-tools.
Code:
cd C:\platform-tools
Code:
adb devices
if you see a device listed here with an id and an online status, everything is fine so far.
Code:
adb reboot bootloader
fastboot devices
again, if you see a device listed here with an id, everything is fine.
Code:
fastboot oem unlock
if it says success, bootloader is now unlocked
you can check using
Code:
fastboot oem device-info
Code:
fastboot reboot
Reboots phone normally
Now obtain a recovery.img for your device. Place it in platform-tools folder.
Code:
adb reboot bootloader
fastboot boot recovery.img
this will temporarily boot recovery, you can install rom from here (provided you find one online), wipe device, etc.
Thats everything you need.
Hit thanks if i helped.
Okay, thanks!
There's just one problem:
I still can't find a ROM for the AzpenPC tablet, and the Digital2 Plus also does not seem to have a ROM -- The serial number is L741GMB1405, and while there was a post on ROMs for a D2, this is a different series than the one listed.
How might I find or make a ROM for these?

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