Davide Depau comments

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                                            Davide Depau

Could not write to device, result == -1 errno 0 null

So, if this doesn't work, I think our last options are: - access [`UsbDeviceConnection.resetDevice()`](https://android.googlesource.com/platform/frameworks/base.git/+/master/core/java/android/hardware/usb/UsbDeviceConnection.java#274) using reflection (it should do a port reset unless I'm missing something) - open the USB...

Could not write to device, result == -1 errno 0 null

> thanks a lot for testing. Well that is too bad :/ I will implement the first option, we can still think about the second one. We can also only...

Could not write to device, result == -1 errno 0 null

BTW I'm going to implement the ioctl thing and see if it works.

Could not write to device, result == -1 errno 0 null

Ah damn I reimplemented it in the meantime :/ I'll pull your changes and test it again.

Could not write to device, result == -1 errno 0 null

Nope :( ``` D/UsbMassStorageDevice: setup device I/UsbMassStorageDevice: MAX LUN 0 D/ScsiBlockDevice: inquiry response: ScsiInquiryResponse [peripheralQualifier=0, peripheralDeviceType=0, removableMedia=false, spcVersion=6, responseDataFormat=2] I/ScsiBlockDevice: Block size: 512 Last block address: 31735807 E/ScsiBlockDevice: error transferring...

Could not write to device, result == -1 errno 0 null

I tested the code in that thread on my computer on a USB drive. (Here's my adapted code) ```c #include #include #include #include #include #include #include #include int main(int argc,...

Could not write to device, result == -1 errno 0 null

I'm noticing that, for whatever reason, I'm getting almost always successfully writes while back then I would only be able to write ~500MB before it would show the issue. Anyway...

Could not write to device, result == -1 errno 0 null

It works! The sequence reset -> close -> open seems to do it. I was able to reset the device multiple times while it was writing, libaums would handle it...

Could not write to device, result == -1 errno 0 null

I'm currently not able to root it for whatever reason I'm not aware of. I'll try it again on QEMU and see if I'm able to reproduce it there. If...

Could not write to device, result == -1 errno 0 null

Alright, it looks like trying over and over to reset the device works some times, I saw it resume writing after one or two attempts. In one test it halted...