Error Code 4 - Connect stuck on 11.2.6

Perhaps cable the Connect direct to your router with an Ethernet cable and then try the update again.

I should have mentioned that...it is hard wired to my router.

I would try the other network port on the device and/or another cable, as the error. by all accounts. is a communication error - or perhaps try the update over WiFi if you have your WiFi credentials installed in your Sonos Household.

I tried the other ethernet port and wifi.  Same problem.

I suspect that the flash chip is not writable for some reason.  Hopefully the Sonos team can see something in the diagnostic log.

I took the plunge, and hooked up a serial port monitor.  The flash has a bunch of bad blocks…

U-Boot 1.1.1(1-16-5-zp90-0.8), Build: zp90-0.8

MPC8272 Reset Status: External Soft, External Hard

MPC8272 Clock Configuration
 - Bus-to-Core Mult 3x, VCO Div 4, 60x Bus Freq  16-50 , Core Freq  50-150
 - dfbrg 1, corecnf 0x10, busdf 3, cpmdf 1, plldf 0, pllmf 3
 - vco_out  400000000, scc_clk  100000000, brg_clk   25000000
 - cpu_clk  300000000, cpm_clk  200000000, bus_clk  100000000
 - pci_clk   33333333

CPU:   MPC8272 (HiP7 Rev 14, Mask unknown [immr=0x0d10,k=0x00e1]) at 300 MHz
Board: Sonos ZP90
I2C:   ready
Cold boot, starting the codec
DRAM:  32 MB
IMMR: f0000000
DRAM tests running ... done
Using default environment

In:    serial
Out:   serial
Err:   serial
Net:   FCC2 ETHERNET, FCC1 ETHERNET
Hit any key to stop autoboot:  0
NAND ID is 20:75
32M NAND flash (ST NAND256W3A)
Block 1372 is bad
Block 1373 is bad
.

.

Block 1476 is bad
Block 1477 is bad
Block 1504 is bad
Block 1505 is bad
.

.

Block 1976 is bad
Block 1977 is bad
Block 2009 is bad
S0 provisionally good, KP=1, G39
page appears to be blank, page 4294967295
page appears to be blank, page 4294967264
S1 is no good
Boot from partition 1
## Starting application at 0x00400000 ..▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒..............................

The skipped “.” lines include every intermediate block.  So there are 581 bad blocks out of 2048… no wonder it’s giving problems.

I recently acquired a flash programmer.  Maybe I’ll try to copy the existing flash contents to a new chip.

Yes it’s opened up.  I wouldn’t expect any assistance from Sonos on a 7 year old device.

If this thread doesn’t get closed, I will report back on any results with respect to replacing the flash chip.

Time is the most frequent reason for closing a thread, not content, at least over the last several years. Sonos is pretty forgiving, as long as you stay within the community rules about posting. 

There are just a few threads here about opening up Sonos devices. I think there’s likely another, more welcoming place out there to get advice. For what I suspect are a multitude of reasons, Sonos doesn’t officially support the opening of their hardware. 

Hi @timc995 

We would have offered a 30% discount on a replacement, though your own solution will certainly be cheaper - if it works.