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Rockbox mail archiveSubject: Sansa AMS/Fuze v2 unbrickSansa AMS/Fuze v2 unbrick
From: CS Tech <cs.tech_at_comcast.net>
Date: Sat, 17 Apr 2010 06:38:39 -0400 Hello all... I was reading the following page at RockBox and wanted to share some information about it: ________ Unbricking It's possible to brick an AMS Sansa by running faulty code. e200v2's can be put in a recovery mode by shorting a couple of pins on the PCB, see the SansaE200v2 page for details, or see http://www.anythingbutipod.com/forum/showpost.php?p=281975&postcount=3 Other AMS Sansas can also get into this mode, but can not be unbricked this way >>> (they present an USB disk of size 0 that cannot be written). http://www.rockbox.org/wiki/SansaAMS#Unbricking ________ I have a Sansa Fuze (v2) which fell into water. I opened the case & dried the circuit board. The battery is good (3.75v) but the flash memory is corrupted and will not boot. When power-on the display is 100% black. When connected to a Mac, the Fuze presents as a USB disk with name: "4.2 MB UNDEF storage media" MacOS says: "The disk you inserted was not readable by this computer" (Initialize / Ignore / Eject) The flash drive does not mount; it is not partitioned / formated. The USB device name is now: M200 Plus (not "Sandisk Sansa Fuze") Mac OS reports these USB parameters: M200Plus: Capacity: 4.2 MB (4,231,680 bytes) Removable Media: Yes Detachable Drive: Yes BSD Name: disk3 Product ID: 0x6200 Vendor ID: 0x0781 (SanDisk Corporation) Version: 4.02 Serial Number: i 0744703000 Speed: Up to 480 Mb/sec Manufacturer: SanDisk Location ID: 0x24741000 Current Available (mA): 500 Current Required (mA): 500 Partition Map Type: Unknown S.M.A.R.T. status: Not Supported DMESG says: USBMSC Identifier (non-unique): i 0744703000 0x781 0x6200 0x402 Disk Utility says: Disk Description : UNDEF storage Media Total Capacity : 4.2 MB (4,231,680 Bytes) Connection Bus : USB Write Status : Read/Write Connection Type : External S.M.A.R.T. Status : Not Supported USB Serial Number : i 0744703000 Partition Map Scheme : Unformatted I think the device is in PRE-BOOT mode. Maybe there is a secret way to unbrick an AMS Sansa without JTAG by shorting pins--and these pins shorted by accident in the water, erasing the Flash chip. This caused the device to enter PRE-BOOT mode… ? Since the status is Read/Write, can I now use e200tool on the Fuze? ________ I also have some questions about this: "You should never, EVER EVER need an i2c.bin unless your player no longer boots to anything except a pure black screen" " http://daniel.haxx.se/sansa/e200tool/i2c-e280.bin should be the same for all the e200 series, as they all use the same I2C " http://www.anythingbutipod.com/forum/showthread.php?t=22225 ________ So now I wonder: Does the Fuze v2 use same I2C as the e200? And where can I find an I2C dump for the Fuze v2? I hope this information is useful to others and would appreciate any comments/ideas/suggestions Received on 2010-04-17 Page template was last modified "Tue Sep 7 00:00:02 2021" The Rockbox Crew -- Privacy Policy |