Dragged my JXD S7800b out of drawer, stuck it on charger and charged up okay.
However, boots up but does not get past boot animation?! So I am looking into how to recover the device please?
Used RockChip Driver Assistant v5.1.1 to setup my windows 10 machine.
RockChip Batch tool v1.8 connects when device powered up but shows pink but not green indication (with no useful error reports), so I don't appear to be able to jam firmware on that route.
Not having much fun with RockChip Factory Tool v5.3 since most images I am downloading fail to load into that, other than what appears to be the official firmware from JXD. That tool otherwise appears only for editing images but not uploading.
I bumbled onto the recovery menu. What wasn't well documented on the steps to get there, so ended up with:
1) power up while holding down power and + volume.
2) display shows an android on it's side, guts opened with a ! and the text message "No command"
3) insert USB
4) the missing bit, hit - volume to scroll into menu
So I found an adb option but haven't installed any android tools as yet on my new machine.
I burnt an SD card with etcher, to use the update from external storage option, but I am guessing the etcher wants to build a boot disk and a boot disk is not wanted? Etcher reports the image will not be bootable in any event.
Reformated SD and copied image onto it in the end but neither apply update or update rkimage "found" anything on the SD card or found the image to be invalid (despite it coming from JXD site).
So, any links to how to set up the SD card for updating the firmware would be appreciated.
I guess also I would like to know the difference between an "apply update from external storage" and "update rkimage from external storage" is what please?
Also, any links to JXD_S7800B_RileyROM_1.2.1.zip seem dead, so has anyone a live link to JXD_S7800B_RileyROM_1.2.1.zip please?
Also wik, with the usb cable in and holding down power and + volume, a few seconds in and windows reports usb device unrecognised. I have installed, uninstalled and re-installed the drivers to now avail. Not sure this is a problem? The fact I can occasionally, rarely, not often enough but just enough to irritate, get a pink but not green light up on the Patch Tool hints the software can almost, but not quiet, enough to make my teeth grind, "see" the device LOL.
Cannot get adb driver going on Windows 10 despite the driver helper having supposedly Windows 10 drivers? Whether that relates to the unrecognised device is unknown but it looks like the Drive Assistant installs usb but not adb drivers, which seem to need a manual install.
UPDATE
=======
Still looking for the information above BUT managed to recover the device by doing a factory reset.
Related
I have a Ployer Momo2 Android 2.1 and I would like to flash it to 2.3.
I managed to download the upgrade package from the oem ployer website, and got the program RKandroidtool v1.29 to execute. It only manage to detect the tablet in mass storage mode even I tried many ways to get it to boot into loader USB mode
There are only three buttons on the tablet, power, menu and esc. I'm running on Win 7 64-bit ultimate. The OS detect the device without any additional installation.
I have been googling around and this post is my only hope now. Anyone out there manage to get the tablet booting up in loader mode ?
I tried copying the file update.img to the root drive of the internal memory. After powering up, the device detect the image file but complains that it is an invalid image file and asked me to delete it.
I wanted to update a Folio 100 that had a stock rom installed, a very old Android version (I think 2.1 or something).
I could not get the usb drivers installed properly in order to do the ADB commands in terminal like most tutorials say. Instead, I managed to install Clockwork loader by SD card.
Then with Clockwork I loaded different .zip files, e.g. cm-10-20121117-UNOFFICIAL-betelgeuse.zip, CM 10 (4.1.2) A5 [AhWz][RIP].zip.
I am not sure what to swipe before or after applying the zips from card. But after I loaded these zips I get a black screen at bootup, right after toshiba logo, I left it like that for over 5 minutes, it doesn't start.
Now if I return to boot recovery menu and I try to do a factory reset I get some errors about mounting, "cannot mount /cache/recovery/log (see attached image).
How can I boot again or return to stock ?
I cannot seem to get the USB drivers to load in windows btw (it never finds a proper device to be installed, just storage device), so if it just works to put a rom on card it would be nice.
Hello,
with CWM 3.0.0.5 you cannot install Cm 10. You have to use the appropriate CWM
try with this installation guide.
http://forum.xda-developers.com/showpost.php?p=31004271&postcount=9
Bye
Instaled Folio 100 usb drivers and booted in download mode
I managed to fix it and install a newer version, it is a huge performance and look improvement from the stock rom of Folio 100.
Just in case others have same problems... my probme(s) were that:
- I could not install the USB drivers for the folio 100.
"debug mode" was enabled but whenever I connected the device it just appeared as a flash storage and in device manager it said that it is already up to date. I used a tool called "usbdeview" to uninstall the device (seen as storage device); then on re-connecting usb cable, windows was looking for Nvidia Tegra drivers, so now I was able to provide proper drivers and it added an "android" device in windows device manager.
- then I realized I was doing some mistakes, I didn't knew that booting in download mode is different than booting in recovery mode, so it has two ways to start it, pressing power+vol_up quick (what I was doing), and more importantly clicking power once then vol_up 3 times, this enabled me to boot in download mode and now the commands in windows command prompt worked (fastboot erase recovery, etc).
From here everything worked as expected (with update steps from these threads), loaded some images, erased partitions, etc.
So it was USB drivers and booting in download mode that confused me.
Hi everyone!
I bought this device as MK809II. Before I was not familiar with Android stick computers so I did little market research and bought this mini PC.
When I plugged it into my tv a black screen saying 'TV BOX' in white appeared, after that a round loading circle( like cyanogenmod ) with android inscription in the middle.
In the settings I paid attention only to the fact there was no mention about RK3066 but something about RK30SDK and the stick computer had about 500mb internal storage and 5,82gb NAND flash.
After installing some basic apps I went out of internal storage and found impossible to move from it to the NAND. I tried some different apps but all required ROOT rights.
I did my research and found a CWM upgrade which leв to crash my device after 30% of the upgrading process.
I downloaded:
- RkBatchTool
- Rom Flash Tool
- Android SDK
- PDANet
RKBatchTool and Rom Flash Tool after installing the images give me no errors and everything goes succesfully until i take of the device from the computer and try to connect it back... it doesn't appear nor on the PC nor on the tv(no signal).
When I put it in boot mode it's green in RKBatchTool and says 'found RKAndroid loader rock usb' in the Rom Flash Tool respectively.
Can't 'switch' or 'reboot to flash mode'(not msc device)
Also can't install properly PDAnet because it cannot find any device and is impossible to run adb shell for the same reason.
I have no clue what should be done for unbrick it! Please help me to find what device really is(I have some doubts after comparing it with pics on the web and system information in the settings) to find the proper guide,drivers and boot image.
Also i would like to know how can I turn it in a mass storage device for my PC.
Try "finless 1.5" rom for your mk908ii.
As for putting in flash try a different cable and use the micro usb port at the end not the side. Or vice versa.
My bad. Read mk908 not 809
Sent from my SGH-I337M using Tapatalk 2
SOLVED - see my last post in this thread
Hello
I was trying to install custom rom on my oneplus one and... don't ask me why but instead of format dalvik/system etc i choose full format (in this section you must enter "yes" before proceed).
I didn't realize that at the end I will not be able to enter fastboot menu! (vol up + power)...
Now all I can do is power on phone in "normal" mode but all I can see in oneplus logo and "powered by android"...
What can I do to re-install os?
Pls help.
Thanks!
I found that article on twrp website:
twrp.me /faq /noos
Code:
No OS Installed! Are you sure you wish to reboot?
If you’re seeing this message in TWRP, this usually means that, one way or another, you have wiped your system partition. How you can fix this issue depends on what device you have and how you want to go about fixing it.
If you have a backup, you may be able to restore your backup to reinstate a working system or OS.
You may be able to find a new “ROM” for your device at places like XDA or use Google to try to locate one. If you have TWRP 2.8.0.0 or newer you may be able to simply plug your device into your computer and use MTP to transfer files. If your device has a removable SD card you can use a card reader to easily transfer the flashable zip to the card then install it under the Install button in TWRP. On some devices you may also be able to use a USB thumb drive along with a special “On-The-Go” cable known as USB OTG to get the file installed. Some devices may support USB mass storage mode (found under the mount menu) to easily copy the file to the device. If all else fails, you can install ADB drivers and software to transfer files using adb push or pull. If you are using Windows (as most people do), it may be difficult to get your computer to properly recognize your device. Windows is really picky about its drivers. You may have to force install a driver or try something like universal or naked ADB drivers.
If the above does not work for you, you can search again on XDA or Google to locate a guide for returning your device back to stock. The process varies depending on what type and brand of device you have. For HTC devices search for “RUU back to stock” plus your device’s name. For Samsung search for “Odin back to stock” plus your device name. LG devices often use a “KDZ return to stock” plus your device name. Google posts factory images for Nexus devices here. Motorola posts factory images for some devices here.
If you still can’t get your device working, don’t bother using the Contact Us button on our web page. We won’t respond to these kinds of support requests.
Any ideas how I can transfer rom files into oneplus? :/
Ok, after connecting phone into computer via usb I can see under windows device manager: MTP USB Device (as unavaiable)
I think I need to install proper drivers for that (see "Windows 7 Portable Device Enabling Kit for MTP") and then I'll able to transfer files... (I don't know how yet...)
https://www.youtube.com/watch?v=NaK5OxUeDKM&index=22&list=LLbsbIuctMb9b87vHzSM8THQ
Got solution!:
([GUIDE] [UNBRICK] Unbrick Oneplus One)
forum.xda-developers.com /oneplus-one /general /guide-unbrick-oneplus-one-t3013732
Q tip if above link will disappear - google for "Qualcomm 2012 drivers, dseo13b, colorOS" phrases.
I made the serious mistake of installing Kingroot which failed installing the first time, then it said try again, then it worked but totally took over every aspect of my phone with no apparent way to delete any of the new "features". It didn't seem to be as much about installing root as it was interested in installing some apps they force you to install which totally takes over your phone. (Side note - it is a shame that this is sold as a rooting software, it should be in reality named a virus or malware and avoided. Too bad for BLU users there doesn't seem to be any other way to attempt a root)
Then installing supersu-me created more havoc, then trying to re-install Kingroot completely locked my phone and put it in a boot loop.
Now upon first attempt, I can't seem to make SP Flash Tool or MTK Droid talk to the phone (first time trying now). I installed all the drivers that came with the forced install .exe (which installs the drivers even when no "unknown device" ever appears in device manager) but I have not yet found any "unknown device" in the Device Manager before or after installing these drivers.
When there is no data cable connected, the recovery menu must be used as the only method to power down the phone because it loops on and on with an attempted power up until the battery runs down. However after using the green on black background recovery menu (hold in VolUp and Power), and making the selection to power down, the phone finally powers down. Unfortunately, as soon as the data cable is inserted into the phone, it begins the boot loop again which makes the laptop ding-dong indicating USB driver loading/unloading over and over.
There are options on the green/black recovery menu to load from SD card and to enable ADB but I can't figure out what driver to use and which option on the green/black recovery to attempt. Of course the factory restore option did nothing and the options for ADB, Fastboot and load from SD card seem promising but all I can find for an image is a RAR file which appears as the format of someone's SP Flash Tool dump, and includes the scatter file MT6582_Android_scatter.txt plus other *.img and *.bin files.
With no way to get into my phone, I don't know how to attempt to load this image which I believe is the extraction from the SP Flash tool. I have installed CDC/ACM driver install package, Google Inc USB, Media Tek usbser from 2011 & 2007, usbvcom and Usbvcom_brom.
Any ideas? Thanks!
Donphillipe said:
I made the serious mistake of installing Kingroot which failed installing the first time, then it said try again, then it worked but totally took over every aspect of my phone with no apparent way to delete any of the new "features". It didn't seem to be as much about installing root as it was interested in installing some apps they force you to install which totally takes over your phone. (Side note - it is a shame that this is sold as a rooting software, it should be in reality named a virus or malware and avoided. Too bad for BLU users there doesn't seem to be any other way to attempt a root)
Then installing supersu-me created more havoc, then trying to re-install Kingroot completely locked my phone and put it in a boot loop.
Now upon first attempt, I can't seem to make SP Flash Tool or MTK Droid talk to the phone (first time trying now). I installed all the drivers that came with the forced install .exe (which installs the drivers even when no "unknown device" ever appears in device manager) but I have not yet found any "unknown device" in the Device Manager before or after installing these drivers.
When there is no data cable connected, the recovery menu must be used as the only method to power down the phone because it loops on and on with an attempted power up until the battery runs down. However after using the green on black background recovery menu (hold in VolUp and Power), and making the selection to power down, the phone finally powers down. Unfortunately, as soon as the data cable is inserted into the phone, it begins the boot loop again which makes the laptop ding-dong indicating USB driver loading/unloading over and over.
There are options on the green/black recovery menu to load from SD card and to enable ADB but I can't figure out what driver to use and which option on the green/black recovery to attempt. Of course the factory restore option did nothing and the options for ADB, Fastboot and load from SD card seem promising but all I can find for an image is a RAR file which appears as the format of someone's SP Flash Tool dump, and includes the scatter file MT6582_Android_scatter.txt plus other *.img and *.bin files.
With no way to get into my phone, I don't know how to attempt to load this image which I believe is the extraction from the SP Flash tool. I have installed CDC/ACM driver install package, Google Inc USB, Media Tek usbser from 2011 & 2007, usbvcom and Usbvcom_brom.
Any ideas? Thanks!
Click to expand...
Click to collapse
Hello,
Please try posting your query here Android Q&A Forum with all relevant details, the experts there maybe able to assist you.
Regards
Vatsal,
Forum Moderator.