Hello. I have a TF101 B60 model. It fails booting to recovery. I can not get it to talk to my WIN7, Mint15, WINXP PCs via USB. It does not get recognized by any. I replaced the USB connector, but that did not help. However; I purchased an ASUS USB adapter that plugs into the tablet and has a full size USB port. I can connect a USB thumb drive, serial port adapter and lan adapter to this USB adapter and the tablet will recognize all of them and work flawlessly. This is the part that confuses me. I have three cables. The original and two I got from ebay. None of these cable work connecting to a PC with Linux or WINDOWS. I can not boot into APX mode. I have spent hours looking a posts and most are fixed by replacing the cable. I have to believe the USB part works because of the adapter works with USB devices.
Any ideas on fixing this or on how to flash a new ROM. I am at .27 now. I can't root or flash withour USB?! I have not seen this as successful even using adb. You still need a rooted tablet. Any help would be greatly apreciated.
Pete
ASUS TF101
2x NEXUS 7
NOOK HD+ with CM 10.2
Unfortunately, if you cannot connect using the USB charging cable you will not be able to root. Many of us have tried to find a way to root using the tablet itself. It is not possible.
The USB host adapter may be using different pins than the actual USB charging cable so there could be a bad pin in the tablet connector that is causing an issue with the USB SLAVE when connecting to a PC. Not sure the best way to diagnose this other than try your cable with another Transformer (could be TF201, 300, 700 or 701) to see if it is recognized by your PC and cable.
Related
any body successed ?
Bad news, there is no way to enable OTG
Because NS uses usb switch chip FSA9280A, and this chip doesn't support OTG.
ref:
1. http://www.promelec.ru/pdf/MUS_Micro_USB_Presentation.pdf
2. http://forum.xda-developers.com/showthread.php?t=1431151
I made a mistake, there is a FSA9480 in the phone, so it support OTG in hardware.
ref:
1.http://forum.xda-developers.com/showthread.php?p=21503413&postcount=2#post21503413
I haven't had any luck getting this to work.
I tried hooking up a USB mouse, game pad (wired 360 controller) and a USB flash drive. However nothing happened when I plugged them in.
I connected them using a micro USB to USB adaptor and an externally powered USB hub.
Since the Galaxy Nexus appears to support OTG without issues, I'm guessing it's not working on the NS because of some sort hardware incompatibility.
Sent from my Nexus S using XDA App
developersdevelopers said:
I haven't had any luck getting this to work.
I tried hooking up a USB mouse, game pad (wired 360 controller) and a USB flash drive. However nothing happened when I plugged them in.
I connected them using a micro USB to USB adaptor and an externally powered USB hub.
Since the Galaxy Nexus appears to support OTG without issues, I'm guessing it's not working on the NS because of some sort hardware incompatibility.
Sent from my Nexus S using XDA App
Click to expand...
Click to collapse
first of all, are you sure your kernel configure support OTG ?
and then, the "micro USB to USB adaptor " is type-A(pin 4 connected with GND) ?
btw, the cup(S5PC110)'s datasheet shows it support OTG.
Ah, I did not realize there were different types of USB OTG adaptors. Thanks for bringing that to my attention.
I did a bit of digging around and it seems that it's not too difficult to modify the adaptor from type B to type A, provided you have basic soldering ability (http://forum.xda-developers.com/showthread.php?t=1092493). Perhaps I'll give that a go when I get some free time.
Has anyone else tried this feature on NS with any success?
This only applies to the Nexus S i9020.
i9023 seems to user another USB chip (http://forum.xda-developers.com/showthread.php?t=1431151) for which are OTG kernels available:
http://forum.xda-developers.com/showthread.php?t=1361477
http://forum.xda-developers.com/showthread.php?t=1427352
http://support.google.com/ics/nexus/bin/answer.py?hl=en&answer=2386439&topic=2375623&ctx=topic
According to the official Google Help Page, it should support USB Host. However searching online have returned a lot of out-dated threads about how the USB chip works when it was still running Gingerbread.
I have purchased a USB adapter, tried to connect any USB device to my Nexus S, and nothing happens. The USB port will not be powered. However quoting Google's official help text :
You may need an adapter to connect the keyboard or other device to your phone's USB port. To connect more than one USB device at a time, use a powered USB hub to reduce the drain on your phone’s battery.
This implies that connecting devices to your Nexus S will drain your battery?
I am very confused. I have no powered USB hubs so I cannot try to see if the USB host function is purely limited by the lack of power or the USB chip.
I am sure I am not the only person who would love this to work. Is there anyone who knows what does it take to get USB Host to work on Nexus S upgraded to ICS? (Despite Google's help site indicating that it should just works out of the box)
Thanks a lot.
So, I spent some money and bought a powered USB hub.
No it didn't work.
I think the reason is that the power is not being transferred UPSTREAM. For example, I have connected the USB hub to my Nexus S, and a Logitech wireless mouse receiver to the powered USB hub.
Although I am sure that the Logitech wireless mouse receiver has power (from the USB hub), the Nexus S does not recognize the existence of the USB hub, since the power is not transmitted from the USB hub back INTO the Nexus S.
Feeling disappointed, I repacked everything nicely and exchanged my purchase for a slightly more useful 16GB SD Card.
Does anyone has any information to how is this supposed to work?
Or should we assume Google has made a stupid typo in their help articles, and that the Nexus S will not actually work in USB Host Mode ??
anyone please?
I too am looking for answers. Anyone?
Sent from my Nexus S using Tapatalk
My TF-101 external interface is messed up. When I plug into my keyboard, the keyboard works, but USB and SD cards aren't recognized. When I try and connect directly to my PC (Linux or Windows) my transformer is not recognized. I tried to boot into apx mode, and my transformer will not do it.
I've tried switching MTP on and off, usb debug on and off--nothing.
I opened my transformer and switched out the physical interface port with my other working transformer, and it made no difference (i.e. it is not the physical transformer port).
any ideas or suggestions?
What ROM/firmware are you running?
Judging from your tests, it tells me there's 2 possibilities:
1. Software is creating the problem
2. The issue is deeper than the USB interface, could be the controller on the board or a number of other hardware issues.
Can you still boot in recovery? If so and if you're rooted, do a nandroid backup just in case. Also do a full backup of your data and copy over wifi using samba or airadb or ftp or etc. Then do a complete flash using easyflasher, get it back to stock. Check if the problem persists. If yes, then I'd assume it's something hardware. You could compare voltage at different test spots on the board.
Edit: I assume APX/transfers work while not docked?
The USB and SD cards are on a different circuit from POWER from the dock, as well as the physical KEYBOARD. I am pretty sure the touchpad is also on the USB/SD circuit, so I would bet that is not working.
Most likely this is an issue with that circuit/board on the dock.
As far as PC detection, I would try getting a new cable. I (and other) have had an issue where our tablets were NOT recognized by multiple PC's, but using the same cord did work to power the device to charge it from the Asus wall wart. My cable has been badly abused by about 12 trips around the world in the last 2 years.
Thanks but it's not the cable given that I have a second transformer working fine on it. I'm on a stock non-rooted build on this one. (The other working transformer is stock, rooted).
Perplexing. Keyboard works with other transformer, as well.
Sent from my SCH-I605 using Tapatalk 2
splashd1 said:
Thanks but it's not the cable given that I have a second transformer working fine on it. I'm on a stock non-rooted build on this one. (The other working transformer is stock, rooted).
Perplexing. Keyboard works with other transformer, as well.
Sent from my SCH-I605 using Tapatalk 2
Click to expand...
Click to collapse
Just to lay out the symptoms: No connectivity with computer (Linux or WIndows) over USB when transformer is booted normally. Transformer does not come up in APX mode. I'm plugging directly into tablet with a known good cable. No hardware problem with connector (pins are good).
Running pure stock US 9.2.1.27 (ICS 4.0.3)
Can boot recovery, but have no good update to use. Anyone with a tutorial on how to "update" a downgrade to honeycomb using stock recovery and a microsd, I'm listening.
thanks,
splashd1 said:
Just to lay out the symptoms: No connectivity with computer (Linux or WIndows) over USB when transformer is booted normally. Transformer does not come up in APX mode. I'm plugging directly into tablet with a known good cable. No hardware problem with connector (pins are good).
Running pure stock US 9.2.1.27 (ICS 4.0.3)
Can boot recovery, but have no good update to use. Anyone with a tutorial on how to "update" a downgrade to honeycomb using stock recovery and a microsd, I'm listening.
thanks,
Click to expand...
Click to collapse
You will need to use Wolf's Downgrade method to install an older recovery from the HC firmware you want to flash.
Since your computers don't recognize it, you cannot downgrade as you need ADB via USB working.
How do you know it is a good cable? My original cable works to charge just fine, but one or both of the data wires (pins 2&3) are not working so it is basically just a charging cable.
Got a new cable and computers can detect it.
frederuco said:
You will need to use Wolf's Downgrade method to install an older recovery from the HC firmware you want to flash.
Since your computers don't recognize it, you cannot downgrade as you need ADB via USB working.
How do you know it is a good cable? My original cable works to charge just fine, but one or both of the data wires (pins 2&3) are not working so it is basically just a charging cable.
Got a new cable and computers can detect it.
Click to expand...
Click to collapse
It's a good cable because I have a second TF-101 that works fine with that cable and my spare good cable...I wish it were a bad cable, that would be the easy fix...
I have an AT&T Z998 phone running Android 4.1.2 that is rooted. I bought an OTG cord and nothing I plug into it will detect. Running an app called USB Host Diagnostics told me that the Android API supports it but does not detect the device.
I plugged the cord into someone else's phone and connected it to a male to male connector to plug it into my computer to see if it detects it. It detected it and started charging the phone, so I know the cord is not defective, but other devices such as a mouse, keyboard and flash drive are not detected (also, my computer doesn't detect my phone).
I've also tried it with a Galaxy Tab 2 7" tablet and my computer detected it but would not charge.
TL;DR - Device not detected with OTG cord but has manufacturer support for OTG.
Any help would be appreciated. Thanks!
I've been having trouble connecting my A8 via OTG for some time. I have a Syntec USB-C to USB adaptor, which allows me to plug usb to the phone via OTG. However, this doesn't work any more (it did originally).
Sometimes when I plug in a device, the phone flashes device connected / device disconnected, sometimes it says usb charging, sometimes it doesn't do anything. I've tested the adaptors connecting them to the thunderbolt port on my desktop, and they work perfectly.
I've also tested the adaptor by using it with a USB-C to usb-a cable to connect the phone to my computer. When the adaptor is on the phone end, it doesn't do anything, when it is on the computer end it works perfectly.
Is there something I can reset or change on my phone to get this working?? It's driving me crazy.
Thanks,
Nick
nicktrigger said:
I've been having trouble connecting my A8 via OTG for some time. I have a Syntec USB-C to USB adaptor, which allows me to plug usb to the phone via OTG. However, this doesn't work any more (it did originally).
Sometimes when I plug in a device, the phone flashes device connected / device disconnected, sometimes it says usb charging, sometimes it doesn't do anything. I've tested the adaptors connecting them to the thunderbolt port on my desktop, and they work perfectly.
I've also tested the adaptor by using it with a USB-C to usb-a cable to connect the phone to my computer. When the adaptor is on the phone end, it doesn't do anything, when it is on the computer end it works perfectly.
Is there something I can reset or change on my phone to get this working?? It's driving me crazy.
Thanks,
Nick
Click to expand...
Click to collapse
plug your phone into your computer and change the connection type to MTP