yashsingh1/xdaforums huggingface dataset:
[Upgrading, Modifying and Unlocking] CVAngelo:
Lol. This is just a mildly uncomfortable dream. You haven't been through a nightmare yet. ??? I'm just really happy to hear you've been able to recover without too much fuss. Isn't wonderful to have your stock ROM backup. It's a lifesaver.

Ok. So I am going to read through the instructions on the link you sent and let u know what I think. Again, you should be fearless. You bricked twice and recovered each time. You have nothing to worry about any longer.

UPDATE: I downloaded the firmware and unzipped. There were no instructions. Nor was there a META-INF folder. Thus, it looks like the typical ROM that one would flash via SPFT. I then loaded it up into SPFT any it looks like a really simple flash. First you would do the wipes on the stock system. Then you'd flash only the following partitions: mbr, ebr1, uboot, bootimg, recovery, sec_ro, logo, and android. The actual file names to flash from the folder are indicated on the Download tab. Then you'd reboot to recovery and do a factory reset. Done. Reboot system. If the ROM is meant for your device, it will boot normally in the new ROM.
[Upgrading, Modifying and Unlocking] mbs22:
Hey guys, want to ask a question. There's this one local android tablet that I wanted to flash using a stock rom from its OEM, since it has already been bugged by viruses, & could no longer reach past its homescreen. After a couple of tries, I was able to successfully flash it using SP Flash Tool v5 without formatting, but upon booting up it just went into bootloop. Given my enough knowledge towards flashing, I know bootloop is somehow common when flashing a new rom without formatting, since the new rom conflicts w/ the old rom, so I thought about going into recovery mode (stock recovery mode) to wipe out data & cache. Unfortunately, I can't go into recovery mode. I 've already tried some button combinations, but to no avail. So I thought maybe there was an issue with the new rom's recovery, so I reasearched & found some articles where a recovery such as CWM can be flashed using the SP Flash Tool, so I tried it, but only went into black screens without the boot logo appearing. This time I was able to reformat it using the SP Flash Tool & got it reflashed a couple of times successfully, just so I could try to go again & try to bypass the bootloop thru recovery mode.

I tried a different process this time. I reformatted the tablet using the SP Flash Tool (so the device is totally blank with NO OS), then tried to flash the CWM RECOVERY IMAGE FIRST before the NEW ROM, and there was an error message. I forgot the error message, but it has something to do with DRAM FAIL. So I know the flashing w/ the new recovery did not push through, since I've already encountered the same error on my initial tries of reformatting the device using the flash tool, that's why I went thru flashing the device with the new rom without reformatting the first time I went successful with the flashing. So now when I tried to re-flash the new rom again, upon connecting the tablet to my pc, it prompted "USB Device Not Recognized", so SP Flash Tool could no longer detect my device. It doesn't power on or charge, nothing is being displayed on the screen since I just reformatted it & have yet to flash the rom. I can't say if the device was hard-bricked, since it can still be detected by my pc & it only shows the message "USB Device Not Recognized". I want to assume that the error message that I got upon connecting the device to my pc was because of the fact that It doesn't have any rom installed yet.

Was there anything wrong that I may have done during the entire process? An advice would be very much appreciated. Thanks. :)
[Upgrading, Modifying and Unlocking] CVAngelo:
When flashing a new ROM, you should always precede it with the four wipes. But just as important, you should never try to boot a new ROM without first booting recovery and doing a factory reset.

Now that you've formatted the tablet and having trouble getting the tablet to connect through SPFT, you have to be patient. You need to try the flashing process multiple times. Try to disconnect and reconnect the tablet. Normally, you would click the download button and connect the cable to the device. Try holding down the volume up or down key while you're connecting the cable. Try connecting the cable before clicking the download button. In other words, just keep trying.

If it still fails to connect to the device via the MTK USB Vcom Preloader driver, then you will have to force the driver to always be present. Go to Device Manager on the computer and use the Legacy Hardware option in the drop down menu to install that driver manually.

Otherwise, the only other thing I can think of is that your tablet isn't actually completely turned off when you are trying to flash. Since it's bricked and the screens are black when you try to boot, it's also possible that it appears to be off, but it may actually still be on. For this reason, tablets are a nuisance. Their batteries are usually not removeable. The only way to ensure that the tablet is really off is to open it up and disconnect the battery. But opening the device may be quite challenging as well.
[Upgrading, Modifying and Unlocking] mbs22:
Actually, I did perform a factory reset (wipe data & cache) multiple times using its stock recovery mode before even deciding to flash the said device w/ a new rom, since I had this perception that maybe I could still regain functions of the current OS by wiping its data & cache, & the viruses will be erased once I do that. But unfortunately, the virus already went to the OS' system files. So regardless if I wipe the data & cache, the viruses are still there, thru the unnecessary ads that kept on popping up and apps that was directly being installed, to the point that I could no longer access its homescreen after doing the factory reset.

I've been also trying to hold either the volume up or down buttons, to attempt to have it detected by my pc, but to no avail as well.

Just got here in my office, & I will attempt to have the device be detected again by my pc in a while.

Do you think this issue I'm encountering has something to do with attempting to flash the CWM RECOVERY image FIRST before the new rom, even though I reformatted the device prior? Because it's the only thing that I've probably done thru this entire process that's out of the ordinary.
[Upgrading, Modifying and Unlocking] CVAngelo:
I think you misunderstood my point about the factory reset. What I said was that it was equally important to do a factory reset IMMEDIATELY AFTER installing the new ROM and before allowing it to boot. That's typically the cause of a bootloop after installing a new ROM.

I don't think your current issue stems from installing CWM on the device as the first thing you flashed after fully formatting. That should not cause the device to not be recognized by the computer. The connection to the computer is made by the preloader, not the recovery.
[Upgrading, Modifying and Unlocking] mbs22:
Oh, sorry for the misunderstanding. I did try to go to recovery mode after successful flashing to wipe the data & cache, but I failed. That's why I tried to install CWM recovery as an attempt to install a different recovery.

BTW, I did what you've said earlier, I attempted to reconnect/disconnect the device from the pc, but not before charging it for more than 2 hrs, even though I'm not seeing any battery charge logo on the screen. And guess what, my device was suddenly detected! I don't know what I did, I tried the volume up/down button, then connect it, but nothing. I rested the device for a few minutes, then upon reconnecting, I was shocked that the device on the system tray appeared installing the VCOM and preloader driver, and the flash progress bar on SPFT began running, since there was no sound from the pc detecting the device. I was able to successfully flash the rom, but somehow I cannot get to power it on. And when I try to charge it, it now shows the charging icon on its screen, but keeps on disappearing. The device vibrates twice, then the charging icon reappears again. It has been like that everytime its connected to a charger. But when I disconnect it, it doesn't power on.

Maybe the issue here is the battery not being removable, perhaps?
[Upgrading, Modifying and Unlocking] Gentleman_1:
BINGO. This time all went well and the watch worked great. However, I was disappointed because the camera couldn't connect. Is that due to anything wrong with the ROM or just incompatibility with hardware?

Also, I understand if I want to install a custom recovery I should root the watch first. Is that true?
[Upgrading, Modifying and Unlocking] CVAngelo:
[MENTION=6659066]mbs22[/MENTION] Sounds like there are a couple issues. First, the battery may have been less than fully charged. So, yes charging the battery would definitely help the flash to proceed. However, if the battery is not removeable, it's sometimes impossible to charge it properly when the device it bricked. In such cases, like bricked tablets, if all else fails, then one should disconnect the battery and charge with a universal charger till full.

Now, the fact that after successfully flashing the ROM, the charge icon keeps disappearing and reappearing while the device vibrates does seem to suggest that it is attempting to boot when powered is applied. That usually means either that the ROM you flashed is not the correct one for your device (the boot.img is not compatible), or it was a bad flash.

I don't think it's a locked bootloader because the device would be bricked and wouldn't even attempt to boot.

Can you boot to recovery? Is it the stock recovery or CWM that's in there now? If you can boot to recovery, do so and do a factory reset. Let me know what happens. If you cannot boot to recovery, it's an indication that the recovery is not the correct one for your device. If it's the stock recovery that came with the ROM and you can't boot into recovery, then it's probably not the correct ROM for your device.

---------- Post added at 07:06 PM ---------- Previous post was at 06:34 PM ----------

[MENTION=5383461]Gentleman_1[/MENTION] Congrats! The third time lucky. Happy that you're up and running with your new custom ROM.

When you say the camera can't connect, what does that mean? Does it throw an error message? What exactly happens. You might try to go to Settings > Applications > Gallery and clear the data. See if that helps.

You don't have to root a device to flash a custom recovery with SPFT. That's only the case if you want to flash the recovery using a root app like Rashr or Flashify. In that case, the device must be rooted (and Busybox must also be installed). And of course, the device would be on with the root app running.
[Upgrading, Modifying and Unlocking] mbs22:
The charging icon that keeps on reappearing only when is connected to a charging cable is only the icon with the lightning, no battery percentage whatsoever, so I'm not really sure whether its charging or not. But it indeed seemed to indicate that it is trying to boot. However, the power button does nothing when pressed, whether its charged or not. So if its indeed trying to boot, the boot logo shouldve atleast appear (similar to the bootloop I initially encountered) after connected to the charger for hours, & the power button shouldve atleast function somehow for the device to be booted, even without being charged. So now the power button does nothing.

The time the device was once again re-detected by my pc, I was able to flash the device twice-the first time I tagged & included the recovery from the new rom, while the second time I untagged it. So currently the recovery should be stock. Although both times I wasn't able to boot the device into recovery mode. I didn't flash the CWM recovery.

I can't say if I have an incorrect rom flashed, otherwise I wouldn't be able to reflashed it over & over. And here is the details of the new stock rom I downloaded that came from the device's oem, which is exactly similar to the details of the original firmware of the device prior to flashing, so I want to assume that I got the right rom (the oem is from a vietnamese brand, which was really hard to find, but I was able to locate it because of its baseband that I googled):

------

Hardware : MT6572 (MT8312C is Fake!)

Model : Masstel Tab 700i

Build number : Masstel_Tab_700i_V02

Build date UTC : 20151202-043105

Android *v : 4.4.2

Baseband v: MOLY.WR8.W1315.MD.WG.MP.V71.P1, 2015/01/15 10:01

Kernel v : 3.4.67 (douyc@hzsw04) (gcc version 4.7 (GCC) ) #1 SMP *Tue Sep 8 16:29:13 CST 2015

------

Are android devices really have a stock recovery mode even though there's no rom installed?
[Upgrading, Modifying and Unlocking] Gentleman_1:
I deleted the data from gallery but no use. when I turn the camera on I get the message: cant connect to the camera.
[Upgrading, Modifying and Unlocking] CVAngelo:
Sounds like it may be an error in the custom ROM. Have you tried alternative camera apps? What version of Android is now running on the device?

---------- Post added at 09:37 AM ---------- Previous post was at 09:18 AM ----------

Yes of course Android has a recovery mode whether or not the system's there or not. When you boot your phone into recovery, the system partition is not mounted. Booting recovery requires only preloader, mbr, kernel and recovery to boot recovery.

And, it is indeed possible to flash the wrong ROM over and over again. The fact that you can flash it more than once does not mean it's the correct ROM.

Anyway, here is the thing. You should not mix the images from the stock ROM with the images from the new ROM. So when you are flashing the new ROM the ONLY images you should uncheck are Preloader, Cache and Data. Then boot into the recovery and do a factory reset.

If you cannot boot into the recovery that came with the ROM, then it is likely the wrong ROM for your device.

Did you UNCHECK the Preloader before flashing this ROM? Or did you flash the preloader?

What Download mode did you use? Download Only or Firmware Upgrade?

What I am really concerned about is that you found this ROM by googling the baseband! Because a ROM has the same baseband as the stock in your device, it does NOT imply that the ROM is the correct one for your device. A manufacturer often makes multiple different devices and uses the same baseband in some of them.

Here is what I suggest. You need to start all over. Flash your device back to stock and get it working again. Dump a full ROM_0 backup of your stock ROM using the Read Back tab. This is what you will need in order to unbrick your phone with the least trouble in case any thing goes wrong.

Then flash the new ROM but use Firmware Upgrade (everything will be ticked but only the correct images will be flashed for the new ROM). After the new ROM is flashed, do NOT boot the system. Instead, boot into recovery and do a factory reset. Then boot the system.
[Upgrading, Modifying and Unlocking] mbs22:
Actually, here's the thing. All android devices of local brands here in our country (im from the Philippines), are rebranded devices, or from OEMs from other countries. Local cellphone brands here don't really manufacture devices, so they look for OEMs , then they rebrand it & market it as their own. And I can't really find the original local stock rom of this device online, so I looked online for this device's OEM, for a chance of locating the oem's stock rom. Its so happened that I was able to find the possible OEM by searching it by baseband, & I chanced upon the said OEM brand Masstel 700i Tab (while the local brand is a Cloudpad 701tv+), which has the exact same design & specification as the local device that I was attemtping to fix. So I wasn't really basing it just by its baseband, I was really looking for its OEM and its stock rom.

So as much as I wanted to flash this using the original local stock rom, I just cant since I cannot find it anywhere.

The rom that I have is the only rom I downloaded, since I have this assumption it was the OEM's original stock rom.

From my previous initial flash attempts on this device, there was only 1 time that I tried to flash with the preloader unchecked. And the last 2 flashes that I made after redetecting my device to my pc, both times the preloader was checked. And I was using the Download Only option all the time, since I do a full format 1st.

I will try to reflash it with the Preloader & Cache unchecked.
[Upgrading, Modifying and Unlocking] Gentleman_1:
You mean I just open SPFT, load the current ROM scatter, uncheck all partitions, locate the custom recovery and check its box only and flash it ALONE to the phone? Or there is another way?

BTW, as far as I know, to backup the ROM with usredata I have to use MTK backup tab and check the Backup userdata box and that requires a rooted phone while if I dont have a rooted phone I can do the backup through SPFT but that doesnt backup any userdata. Is that right? If not how to backup userdata with the ROM?
[Upgrading, Modifying and Unlocking] leo_hacker82:
the devices is recognized thru pc..i can flash any rom..but my readback with spft in write memory just dont start..appears mtk preloader and thge flash never start

---------- Post added at 07:08 PM ---------- Previous post was at 07:05 PM ----------

maybe the flashtool is not compatible with mtk6580 my chipset..
[Upgrading, Modifying and Unlocking] mbs22:
Now, I get it, that's why its not booting even though its beeing recognized was because of the inclusion of the preloader prior to flashing. From my previous initial flashing, the preloader was also included, but I was still able to see the boot logo, though it resulted into bootloop. But Im still dumbfounded as to with the charging icon, cant seem to charge properly. I've already left the device charged the whole day, so even though the charging icon keeps on reappearring/disappearring the whole day, its battery shouldve atleast been charged somehow.

Your suggestion is a really good one, as backing up the stock rom of the other similar device would definitely solve my problem. But looking for this same device would be a more difficult find, as I don't really know anyone that has the same tablet as mine. Most people I know have either iPads or other internationally-known android tablets. If I only have the cash, I would rip my wallet & buy another one.

I was able to reflash it again earlier today without the preloader & the cache included, but still cant boot the device. The power button only responds when it is charged, it vibrates the device, but the screen remains blank.

Is the device's default preloader resets when reformatted? Or does the wrong preloader sticks to the device even when reformatted, that's making the device not boot?

And does an android device have a default preloader, even without an installed rom, or does it really comes from the stock rom?
[Upgrading, Modifying and Unlocking] CVAngelo:
An Android device (in fact just about any kind of device) comes with a preloader. It's like the BIOS on your computer. It's the low level software that tells for example that you are pressing the power button so it then has to load up the bootloader, kernel etc. If a device came without the preloader (for example if you format the whole phone INCLUDING the preloader), then the device will be as useful as a cold brick. It will never start again.

The preloader will be whatever came stock or is replaced with what you flashed over the stock. Yes, if it's got the wrong preloader, it won't boot. And reformatting does not replace the preloader with the stock preloader (you would have to solder some contacts on the motherboard to get the stock preloader back into the preloader partition...but that's a very complex procedure requiring specific tools and it would have to be done by a technician...it's done to revive a hard bricked device).

But I said that it MAY be part of your problem. I didn't say that it is certainly the whole problem. You may still have a chance to get your device unbricked. Usually, the battery charging icon is part of the kernel (boot.img). So if it's not fully displaying or it goes away and tries to display again, it is possible the boot.img is bad or it's not the right one for your device. And you also said you can't even boot into recovery. That's another indication that the ROM is not meant for your device...it appears to be for a closely related device or a slightly different version of your device.

So I think your only hope is to obtain the stock ROM from a working device. Instead of trying to find an individual with your device, go to one of the stores where the device is sold. Ask the ower if you can dump the ROM. Hopefully they will be helpful.
[Upgrading, Modifying and Unlocking] Gentleman_1:
BUT when I flashed the recovery partition only I got the phone bricked. You said then that the recovery is connected to the kernel and I should use only the recovery that came with the ROM I am flashing so how can I flash a separate CUSTOM recovery this way?

So what is the function of the backup tab in MTK droid app?

I am asking about this to use in case my own ROM crashed for some reason or I had to do a factory reset. In that case I would just flash the whole ROM back in place and I will find all my apps and settings restored instantly like how they used to be instead of having to download all the apps back again and setting them up manually from the beginning. Dont you think that is a valid reason?
[Upgrading, Modifying and Unlocking] mbs22:
The brand of this device is a slightly known local brand here. And same with the other brands, they also have their own service centers, so most likely I won't be able to ask their in-house technicians personally for a backup of the stock rom.

Well, looks like I'm back again at square one. But atleast the device can still be detected by my pc and SPFT,pressing the volume UP is responding when being connected to SPFT, & can still be reflashed. And the fact that you said that the reappearring charging icon is part of the boot.img, only means that the device is still alive. So this is DEFINITELY still a good sign. I would still take the current status of my device over a hard bricked device ANY day, haha.

Thanks for the information sir. Now I realized how noob I am still when it comes to flashing. Hehe.

Would you happen to know any well-know websites where I could look & possible download roms? I want to take a chance that I still might find the original local stock rom for this device. :)
[Upgrading, Modifying and Unlocking] CVAngelo:
You're welcome. Happy to help. Yet, I do appreciate when people hit the Thanks button too. Lol

You should continue to Google your device. Search XDA to see if there's a specific forum for your device. There are only a few websites that are dedicated to providing ROMs. One example is needrom.com but it's unlikely to have ROMs for less popular devices (because the ROMs are uploaded by users).

Your best bet is to find some online forum for devices of your brand. I guarantee you that there will be users there who have your exact device. You'll have to beg someone to please dump their ROM (minus cache and userdata) and upload it for you.
[Upgrading, Modifying and Unlocking] mbs22:
There's this one local forum that I visited yesterday, that's been posting firmwares for the local devices, esp. For this particular local brand. Will try my luck here. :)

Already hit the Thanks button. :)
[Upgrading, Modifying and Unlocking] CVAngelo:
Great! You should post the link to the local forum here so that if someone else in your situation does a search here on XDA, they will find it.