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= Updating Boot Loader =

The below documents the process of updating the boot loader ''uboot'' on a Squeezebox Controller on a:

# Windows-based PC running HyperTerminal
# Keyspan USA-19HS USB-DB9 serial cable
# Squeezebox Controller breakout board serial-USB board

This process may render your Squeezebox Controller inoperable. '''Logitech assumes no responsibility for anyone following this procedure.'''

=== Step 1: Getting Ready ===

To get started, you need to copy this file to your Windows PC:

* Boot loader uboot.bin [[Media:uboot.zip]]

You then need to do the following:

* Plug in the Keyspan 19HS into a USB port on your PC.
* Connect the breakout board's DB9 serial port to the Keyspan
* Remove the black plug on the bottom of the Squeezebox Controller
* Plug in the breakout board into the bottom of the Controller

=== Step 2: Setting up HyperTerminal ===

# Open Hyperterminal
# Name your connection
# In the '''Connect To Window''' choose the “connect using COM3” option
# Press the configure button then change the following:
#* Bits per second: 115200
#* Flow control: Xon/Xoff
# Press OK

=== Step 3: Writing uboot to Flash ===


Power cycle Squeezebox Controller. When you see
 Hit any key to stop autoboot 
quickly hit any key, you’ll only have a second. If you are not quick enough power cycle and try again.

At this point the screen should look like:

 U-Boot 1.0.0 (Jun  5 2007 - 15:05:11)
 U-Boot code: 33E00000 -> 33E1CB94  BSS: -> 33E207CC
 IRQ Stack: 33e417c8
 FIQ Stack: 33e427c8
 DRAM Configuration:
 Bank #0: 30000000 64 MB
 NAND:Nand Flash Probe...
 Nand Flash Configuration:
 Page Size  :512 Bytes
 Oob Size   :16 Bytes
 Block Size :16 KB
 *** Warning - bad CRC, using default environment
 In:    serial
 Out:   serial
 Err:   serial
 Hit any key to stop autoboot:  1 ___ 0 
 SMDK2413 #

The important part here is the SMDK2413 # at the end.

Then carefully enter:

 nande a 4096

It should say:

 StartBlock 10 (0xa) : Size 16534 (0x4096)
 Total Erase Blocks 1 (0x1)

Then carefully enter:

 loadb 30008000

It should say:

 ## Ready for binary (kermit) download to 0x30008000 at 115200 bps...

In HyperTerminal click on the Send icon:
[[Image:uboot1.jpg|center|thumb|100px|Send on Hyperterm]] 

Select the u-boot.bin file, choose Protocol Kermit and hit the Send button:

[[Image:uboot2.jpg|center|thumb|100px|Hyperterm and Kermit Protocol]] 

You will get a progress box, it should take about 1 minute 30 seconds to send the file.

Then carefully enter:

 nandw 0 28000 30008000


It should say:

 NAND Flash writing
 Source base address    =0x30008000
 Target start block num =0
 Target size            =0x28000
 block writed :
 0 
 1 2 3 4 5 6 7 8 9

=== Step 4 Verifying Update ===

Power cycle Squeezebox Controller. When you see 
 Hit any key to stop autoboot 

quickly hit any key, you’ll only have a second. If you are not quick enough power cycle and try again.

At this point the screen should look like:

 U-Boot 1.0.0 (Jun  5 2007 - 18:06:52)
 U-Boot code: 33E00000 -> 33E1D038  BSS: -> 33E20C74
 IRQ Stack: 33e41c70
 FIQ Stack: 33e42c70
 DRAM Configuration:
 Bank #0: 30000000 64 MB
 NAND:Nand Flash Probe...
 Nand Flash Configuration:
 Page Size  :512 Bytes
 Oob Size   :16 Bytes
 Block Size :16 KB
 *** Warning - bad CRC, using default environment
 In:    serial
 Out:   serial
 Err:   serial
 Hit any key to stop autoboot:  1 ___ 0 
 Jive #

Enter:  

 boot

Squeezebox Controller should now restart normally. '''If not, then you may have rendered your Controller inoperable.'''

[[Category:Development]]
[[Category:Squeezebox Controller]]