# Filesystem Permission denied when saving keys

**URL:** <https://community.particle.io/t/filesystem-permission-denied-when-saving-keys/10569>\
**Category:** uncategorized\
**Created:** [March 11, 2015, 9:09pm UTC](https://community.particle.io/t/filesystem-permission-denied-when-saving-keys/10569 "2015-03-11T21:09:59Z")\
**Posts on this page:** 1\
**Showing post:** 11

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**Author:** ![jairos](https://avatars.discourse-cdn.com/v4/letter/j/85e7bf/32.png) [@jairos](https://community.particle.io/u/jairos)\
**Post date:** [March 12, 2015, 3:51pm UTC](https://community.particle.io/t/filesystem-permission-denied-when-saving-keys/10569/11 "2015-03-12T15:51:49Z")

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@kenneth I try : leave without him. As they say in :

> **[Error: Invalid dfuse address: 0x08005000:leave \[SOLVED\]](https://community.particle.io/t/error-invalid-dfuse-address-0x08005000-leave-solved/2426/3)**
>
> I will try to remove the :leave. The only reason why i am not using 0.7 is that there are no .exe files in the download. Only the 0.6 had it. I have no idea why.

> **[Error: Invalid dfuse address: 0x08005000:leave \[SOLVED\]](https://community.particle.io/t/error-invalid-dfuse-address-0x08005000-leave-solved/2426/3)**
>
> I will try to remove the :leave. The only reason why i am not using 0.7 is that there are no .exe files in the download. Only the 0.6 had it. I have no idea why.

supertienda151@supertienda151-Satellite-Pro-L300D:~$ **sudo dfu-util -d 1d50:607f -a 0 -s 0x08005000:leave -D core-firmware.bin**  
[sudo] password for supertienda151:  
**invalid dfuse address: 0x08005000:leave**  
supertienda151@supertienda151-Satellite-Pro-L300D:~$ **sudo dfu-util -d 1d50:607f -a 0 -s 0x08005000 -e -D core-firmware.bin**  
**dfu-util: invalid option -- 'e'**  
Usage: dfu-util [options] ...  
-h --help Print this help message  
-V --version Print the version number  
-v --verbose Print verbose debug statements  
-l --list List the currently attached DFU capable USB devices  
-d --device vendor:product Specify Vendor/Product ID of DFU device  
-p --path bus-port. ... .port Specify path to DFU device  
-c --cfg config\_nr Specify the Configuration of DFU device  
-i --intf intf\_nr Specify the DFU Interface number  
-a --alt alt Specify the Altsetting of the DFU Interface  
by name or by number  
-t --transfer-size Specify the number of bytes per USB Transfer  
-U --upload file Read firmware from device into   
-D --download file Write firmware from into device  
-R --reset Issue USB Reset signalling once we're finished  
-s --dfuse-address address ST DfuSe mode, specify target address for  
raw file download or upload. Not applicable for  
DfuSe file (.dfu) downloads  
supertienda151@supertienda151-Satellite-Pro-L300D:~$ **sudo dfu-util -d 1d50:607f -a 0 -s 0x08005000-e -D core-firmware.bin**  
invalid dfuse address: 0x08005000-e  
supertienda151@supertienda151-Satellite-Pro-L300D:~$ **sudo dfu-util -d 1d50:607f -a 0 -s 0x08005000 -D core-firmware.bin**  
dfu-util 0.5

(C) 2005-2008 by Weston Schmidt, Harald Welte and OpenMoko Inc.  
(C) 2010-2011 Tormod Volden (DfuSe support)  
This program is Free Software and has ABSOLUTELY NO WARRANTY

**dfu-util does currently only support DFU version 1.0**

Filter on vendor = 0x1d50 product = 0x607f  
No DFU capable USB device found

\*\*  
\*\*  
supertienda151@supertienda151-Satellite-Pro-L300D:~$  
**Thank**

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