Trying to recover some google home mini's - Google Home

I have been given around 20 some google home minis and all are suffering from bad firmware updates. I have tried looking for for a solution for Jtag'ing or serial connection into them with no luck. Has anyone been able to or know of a way of getting new firmware on them., short of desoldering the chip and flashing it externally. They do not boot correctly / or connect to wifi.

I have the same problem with GH
starts with two dots after a bad update
I've tried to connect with a OTG USB cable for a USB LAN it detected the network card and starts up in white dot on the microphone ( m be Putty access?)
and then USB
"You can get it to show up as a USB device if you have the USB cable plugged in and hold down the "mute" button while plugging the power in... Shows up as a "BG2CD S/N:12345678A" for a few seconds, then seems to sit in the first part of the bootloader(Top and bottom LED lit dimly) forever until you unplug/replug the power."
I know you're asking about GHmini, but I'm guessing it's same of problem

ive got quite a few with either demo fw or bricked, going to try to see if there are any headers but at last resort you might have to dump the onboard nand flash and reprogram it back. hope the mac address is stored in the wifi chipset itself, or you would need to edit each dump indivdually

ethanchow said:
ive got quite a few with either demo fw or bricked, going to try to see if there are any headers but at last resort you might have to dump the onboard nand flash and reprogram it back. hope the mac address is stored in the wifi chipset itself, or you would need to edit each dump individually
Click to expand...
Click to collapse
looks like OS is stored on a https://www.mouser.com/datasheet/2/877/TC58NVG1S3HBAI6_datasheet_en_20130118-1148524.pdf or equivalent drop in replacement, should be able to get a socket/breakout for it and program it with something like a TL866II Plus. do you still have the lot? if I can get my hands on a large enough lot it might be worth it to make some sort of break out jig specific to the mini to mass read these without desoldering.
edit edit heres a very well written writeup on the reverse engineered the mini https://courk.cc/running-custom-code-google-home-mini-part1#
well worth the read. interesting that this doesnt use an EMMC but rather raw nand, and therefore has to deal with building a usable image from a raw dump and then extracting partitions from there. if it is possible find offsets of partition for userdata it might be trivial to use socket to flash a factory fw then preserve product data.

Related

Restoring via RUU problem

I've got a Wing from T-Mobile and I was checkin' on HTC's site... I dont' see any RUU files for that particular phone... T-Mobiles site had an RUU for me but it requires an activesync connection,
Now I've gone and proper bricked the (insert bad word here) so it won't even make an activesync connection anymore,
I was tryin' to put a lite version of one of the touch IT releases on there, all i've got now is a solid white screen. Phone will make noise when it's slid open; and the screen has an auto timer dim, but no display....
The RUU I got off t-mobiles site runs off an exe (do they usually?) Problem with it is that it requires an activesync connection which the phone can't make at the momment because of it's current state...
Is there an alternative to activesync that would help me out in this case? I know when I effed up a Linksys router I was able to tftp the firmware, not sure if there is anything like that I can do in this case. It only happened this morning though and the phones not active anyway so I'm going to continue looking (It's awaiting activation but it's now the weekend so I've got at least 2 days to work on it anyway.)
You may notice; I'm entirely new to this however I did look into it enough to ensure that I had an RUU to begin with before I tried any of this... Also, I have a second wing that's still set the way it was @ stock... Would that help in any sense?
Another question I had is what exactly is a lite version; from my understanding it was WM6 w/o the bloat... I'm begining to wonder if it's an OS with no tools not even a phone tool (I wouldn't think so but maybe I misunderstood.)
Thanks for any and all help or even suggestions to resolving my first brick
Edit: I'm begining to think my option is to try to submit it under warranty but I'm sure they can look at whats currently on the phone and I've got a hunch that right there will get me an outta warranty fee...
Edit2: I may have wound up able to answer my own question, (I'm at work atm and don't have access to test anything till 9pm tonight so I thought I'd post incase I was overlooking something, or incase I was able to find something to help others.)
I read;
JDawgZX11D said:
"If you had the same problems as I started with, and that it will not boot past the T Mobile screen, here is what you do.
RUU_Atlas_TMO_US_4[1].10.531.3_4.1.13.37_02.83.90_Ship
Download the orignial T Mobile rom, it is on this website about 300 times (I guess I was not the only one). I am sure you have winrar, open up this file in winrar. There are 8 files inside of it. The one you are most concerned with is \RUU_signed.nbh this is the original operating system. Get yourself at a minimum a 128mb micro sd card. Format it to FAT32 and copy the before .nbh file to the root directory. Rename the file to Heraimg.nbh That way if you start with a brick, you can end up with a shining penny! So when it is bricked, you do a hard reset. Hold the camera button and the voice record button, then push the stylus in the reset button. as long as you pushed in the micro sd card in the slot, it will reload. When it asks you to push this button it, they mean the volume down button. After about 15 minutes, your brick is no longer bricked. It will do it's thing and then soft reset on its own. You are back to factory default, YEA!!! Remove the Micro SD card out at this point."
Click to expand...
Click to collapse
I will try this later, thank you.
Fixed it
What I didn't realize is that you can still install an RUU via USB w/o activesync through the phones bootloader and the EXE from the comp.
THanks for the help anyway

[Q] Need JTAG pinout for Galaxy Tab 7 (Sprint - SPH-100)

So the other day I was attempting to flash clockwork recovery on my tab after I succesfully flashed a rooted ROM via Odin. Clockwork freaked out (Yes, I was using the correct version, accoring to many threads) and the tab started booting directly to clockwork when powering on the tab or rebooting and just scrolling through commands it was running. Now I get the soft brick symbol at boot (A phone symol and a computer symbol, with a dotted line connecting them both to a yellow triangle with an "!" in it.
Now adb wont see it, and when dumping kernel changes during plug in via my linux box I don't even see it connecting and disconnecting from the USB port(s).
So I went to Radio Shack and got everything I needed to build the appropriate JTAG parallel cable in order to flash it directly from the motherboard. That went great, however, this is where things got tricky:
Nowhere, can I find the correct pinout for my tab. There is a post online that was apparently for my device, however, after I got the board out of mine I noticed that the pin setup is different, as well as component placement on the board itself when doing a visual comparison.
This is an overhead of the entire board:
tiff upload
This is a close-up of where I believe the JTAG pinout should be located:
hosting images
Anyone who can help, has a good idea, or can point my in the right direction, I would be extremely grateful. If you have the information I need, I'll even consider donating to you for the trouble if accurate. I have searched and searched and searched. Again, thank you for any help as I am at an absolute halt.

Nook Color won't go into USB Mode

I really need some help here as I have hit a wall. Currently my Nook Color will not go into USB Mode when connected to the PC (Win 7 x64). When I plug it in the drives show up under My Computer but are the generic greyed out Removable Disk icons. I did have my NC dual booted with Taosaur's instructions and this problem started when I went to update the stock ROM.
Since then I've gone through the instructions in that thread several times and even posted there with no luck. I've restored to stock every way I can find including the 8 failed boots method and have tried damn near everything else I can find. I've swapped out drivers on the PC, reinstalled the Android SDK more than once and have verified this same thing occurs on multiple PCs and with multiple cables. I will say that the one time I got it to work was by rolling the NC all the way back to 1.1.0 but if I update after that it stops working again.
As it stands now my NC is completely stock as far as I can tell it just won't let me transfer files to it. If I transfer a book to the SD Card on the PC and then plug it into the NC and try to open it all I get is a blank white screen with a small black arrow at the top and the NC becomes unresponsive.
Is there some change I'm missing that would cause this or anything else I might have done? Please offer any help you can think as I've tried everything I can find. Also, sorry for the wall of text.
CrackedTech said:
I really need some help here as I have hit a wall. Currently my Nook Color will not go into USB Mode when connected to the PC (Win 7 x64). When I plug it in the drives show up under My Computer but are the generic greyed out Removable Disk icons. I did have my NC dual booted with Taosaur's instructions and this problem started when I went to update the stock ROM.
Since then I've gone through the instructions in that thread several times and even posted there with no luck. I've restored to stock every way I can find including the 8 failed boots method and have tried damn near everything else I can find. I've swapped out drivers on the PC, reinstalled the Android SDK more than once and have verified this same thing occurs on multiple PCs and with multiple cables. I will say that the one time I got it to work was by rolling the NC all the way back to 1.1.0 but if I update after that it stops working again.
As it stands now my NC is completely stock as far as I can tell it just won't let me transfer files to it. If I transfer a book to the SD Card on the PC and then plug it into the NC and try to open it all I get is a blank white screen with a small black arrow at the top and the NC becomes unresponsive.
Is there some change I'm missing that would cause this or anything else I might have done? Please offer any help you can think as I've tried everything I can find. Also, sorry for the wall of text.
Click to expand...
Click to collapse
No idea what your specific problem is, but I'd suggest skipping the cable and using a wireless transfer solution anyways. Easier than breaking out the cable (or transferring the card). Try wifi file explorer pro. I've been using it for months on several different android devices and it's never failed to be awesome (and the dev updates it every few weeks with new features!). good luck!
Have you tried a different SD card? It could be that that one is borked.
I haven't tried a different card in the device so I will check that out. However, I can put that card in a USB reader and transfer files to it that way but when I try to open them on the book afterwards it's just a white screen with a little black arrow on it.

hard disk problem

I'm using 160 GB hard-disk, before 2 days when I was installing window xp on my pc it was shut down then I start my pc and go to set up it show no hard disk. Is it possible to repair hard disk. I'm not in a position to buy a new hard disk. Please help me.
it is possible to repair a hard drive. it could be as simple as the mbr got corrupted.
first see if its seen in the bios. if it is then you have a chance. if not ... check the connections. if all of them are good... then sorry its more then likely the controller board has died.
to repair though.. you want to download the vendor specific diagnostic program. boot to it and run the advanced test. if it finds an issue then it will attempt a repair if possible. if not... it spits a code for warranty.
Yeah I wouldn't go straight to hard disk either.
Crack 'er open and check the cables.
Try a new cable
Try a different power connector if one is available.
Try going into your bios and rescanning the bus.
If all that fails, try the hard drive in another computer (if available).
Then, check newegg for refurbs with similar specs.
http://www.newegg.com/Store/Recertified.aspx
This has nothing to do with mobile devices. Moved to Off-Topic.

Question Do I need root?

Hi All, long time user of XDA forums but havent had to root a phone in a while.
I deleted some pictures in error from my phone yesterday and am desperately trying to figure out a way to get them back. They dont appear in the recycle bin and they dont appear with a standard file search app, thousands of pictures do but not the ones I deleted.
Apparantly I need to root the phone to get better access rights to do this, but am I right in believing that rooting the phone will delete everything anyway?
Any way to do this please? I really need some help with these important images.
Samsung Galaxy S21 Ultra (UK) 5G SM-G998B/DS
Regards Tony
Don't try to use trashware like DrFone.
The internal memory is encrypted by default so if you lose that encryption key for any reason you are boned.
If you can use adb to access the unused portion of the drive, that may work.
Using ADB in recovery mode - recovering files from a locked phone
Hello, here's my problem: I accidentally put a schematic as a code on my phone that I immediately forgot. Now that I only have access to the lock screen, I can't put my phone in file transfer mode because I'd like to retrieve it before resetting...
forum.xda-developers.com
If you are successful know that the folder structure has been lost. The jpegs will be disassociated from their exif data, time stamps, image numbers, etc have been lost forever.
Using that phone at all may overwrite the data as it's now free space for the system to use; power down the device until ready to attempt recover.
Backup all data before you begin whatever you attempt!
Personally at this point I would have written them off. If you do recover data, you'll understand why. In the future use a gallery that has a trash bin if possible.
Redundantly backup critical data to at least 2 hdds that are physically and electronically isolated from each other and the PC. A OTG flashstick can be used for quick "dirty" backups. Don't use as a primary backup.
If you can mount your phone on a PC using a USB cable, you could try a PC based file recovery program. (I honestly don't know if it would work over a USB cable, but no harm if it doesn't.)
Be careful where you get the recovery software. There are lots of people willing to promise the world, take your money, and blame the file recovery ghods when they can't recover squat.
The one I'd try first has the worst user interface, but it's free and has saved my butt more than once. It's called PhotoRec. (It's packaged in with a drive recovery program called TestDisk.) PhotoRec supports a bunch of Linux/Android disk formats (many only handle FAT and NTFS variants, which won't help you). Just be sure you read the instructions and be sure to direct the output to a dedicated folder on a drive different than your phone.
TestDisk Download
Download TestDisk & PhotoRec. TestDisk is a free and open source data recovery software tool designed to recover lost partition and unerase deleted files. PhotoRec is a file carver data recovery software tool.
www.cgsecurity.org
I just noticed that PhotoRec finally has a Windows based GUI implementation called QPhotoRec. Same download location as I mentioned in the previous message. But should be a fair bit easier to use.
Note: If QPhotoRec can't see your phone on the USB cable, you might still want to give PhotoRec a try.
One last note... As long as you continue to use your phone, it is still writing things to the drive that holds the pictures you want to recover. If the phone happens to overwrite the place the photos sat on, they're gone forever. So it's best if that you power off your phone until you can make an attempt to recover the photos and you move quickly to make the attempt... Good luck.
After the recent dumping of Samsung Cloud and the forced migration to a Microsoft cloud drive,I lost a bunch of photos from my alternative device (I had 2 phones and 2 Samsung Cloud accounts- but the changeover couldn't handle the 2 account bit, both phones ended up with the exact same data) and I tried several methods to recover the lost data and eventually had to give up. Good luck.
Relying on cloud to backup files is crazy. Keep a couple hard drives/usb drives for that.
rafaelinux said:
Relying on cloud to backup files is crazy. Keep a couple hard drives/usb drives for that.
Click to expand...
Click to collapse
Cloud backup is safer than keeping a couple of hard drives and usb drives. By design cloud storage is replicated a minimum of 3 times across 3 regional data centres, each having multiple copies on distributed storage with multiple backup services and UPS.
Your data is not safer on two USB drives vs a Google data centre. Do you keep them in fireproof and electronic magnetic proof safe? If not then your backups are not protected at the first step, physical protection. Do you cycle the hard you use, change the drives regularly so that there is no chance of hardware failure, do you consider MTBF rates of the devices you use? USB drives have a limited number of writes so using them too much may risk the data on them. Do you use multiple off-site safes? If both are in one place and there is some disaster (building collapse, or fire for example) then you've lost your backups. Each site needs a fireproof/EM proof safe which adds a huge extra cost.
did you check the trash folders?? usually deleted files stay on for 30 days unless physical deleted from the trash like windows
ScalesOnline said:
Hi All, long time user of XDA forums but havent had to root a phone in a while.
I deleted some pictures in error from my phone yesterday and am desperately trying to figure out a way to get them back. They dont appear in the recycle bin and they dont appear with a standard file search app, thousands of pictures do but not the ones I deleted.
Apparantly I need to root the phone to get better access rights to do this, but am I right in believing that rooting the phone will delete everything anyway?
Any way to do this please? I really need some help with these important images.
Samsung Galaxy S21 Ultra (UK) 5G SM-G998B/DS
Regards Tony
Click to expand...
Click to collapse
What app did you delete the photos in?
Each app will have its own "delete/recycle" solution. For example, if you delete photos in Google Photos they are kept in the "Bin" for 30 days. If you used a file manager it may have a recycle bin or may have permanently deleted using write over to provide a true delete function.
Rooting like years agao
I am cool with what i have now
Yes you do for acces to internal memory

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