AIR-AP1852I-E-K9 UBI Error - Messed up partitions'

[radras]

Hi everyone,

We had 2x AIR-AP1852I-E-K9 not in use and connected it to our WLC which worked for one of them. 
The 2nd was unable to receive any update of the firmware from WLC and I tried to update the firmware myself. 

As inexperience I am, I flashed the partition and even with the loaded firmware via TFTP, I cant load anything nor boot the system.
Factory reset (mode button 20sec) isn't working neither.

Current state of starting the device:

Spoiler

DRAM: 1 GiB
NAND (ONFI): Detected SPANSION S34MS02G1 [256 MiB]
SF: Detected Macronix MX25U3235F [4 MiB]
MFG data loaded
Scanning shenv data blocks
Total valid parts=4
Active shenv part[1:1], write_counter=36
Net:
PHY ID = 0x4dd074, eth0 found AR8033 PHY
PHY ID = 0x4dd074, eth1 found AR8033 PHY
Valid I2C chip addresses: 51 52
AP 1832/1852 detected...
Power Type: 802.3af POE or Others detected...
Signature returns 0
BL signing verification success, continue to run...
Auto boot mode, use bootipq directly
Hit ESC key to stop autoboot: 0
Specified BOOT: part1
UBI error: ubi_read_volume_table: the layout volume was not found
UBI error: ubi_init: cannot attach mtd2
UBI error: ubi_init: UBI error: cannot initialize UBI, error -22
UBI init error 22

Booting from part1

Error, no UBI device/partition selected!

Booting failed, try boot on part2

Error, no UBI device/partition selected!

Only mode I can access is the "(RNAQ-C7) #" with following commandlist:

Spoiler

(RNAQ-C7) # help
? - alias for 'help'
base - print or set address offset
bootipq - bootipq from flash device
chpart - change active partition
cmp - memory compare
cp - memory copy
crc32 - checksum calculation
echo - echo args to console
env - environment handling commands
ethreg - ethreg - Switch/PHY Reg rd/wr utility

exit - exit script
false - do nothing, unsuccessfully
go - start application at address 'addr'
help - print command description/usage
i2c - I2C sub-system
iminfo - print header information for application image
imxtract- extract a part of a multi-image
ipq_nand- Switch between SBL and Linux kernel page layout.
loadb - load binary file over serial line (kermit mode)
loady - load binary file over serial line (ymodem mode)
loop - infinite loop on address range
md - memory display
mii - MII utility commands
mm - memory modify (auto-incrementing address)
mtdparts- define flash/nand partitions
mtest - simple RAM read/write test
mw - memory write (fill)
nand - NAND sub-system
nm - memory modify (constant address)
pci - list and access PCI Configuration Space
ping - send ICMP ECHO_REQUEST to network host
printenv- print environment variables
printmfgenv- Print manufacture information data
printshenv- printshenv- print shared environment variables

reset - Perform RESET of the CPU
run - run commands in an environment variable
saveenv - save environment variables to persistent storage
saveshenv- saveshenv - save shared environment variables to persistent storage

setenv - set environment variables
setshenv- setshenv - set shared environment variables

sf - SPI flash sub-system
showvar - print local hushshell variables
smeminfo- print SMEM FLASH information
source - run script from memory
test - minimal test like /bin/sh
tftpboot- boot image via network using TFTP protocol
true - do nothing, successfully
ubi - ubi commands
usb - USB sub-system
verify_bl- Cisco Bootloader signature verify
verify_lx- Cisco Image signature verify
version - print monitor, compiler and linker version

Is there a way to get this back to work? or am I cooked and we have to get a RMA?

[Mark Elsen]

  - @radras    Type reset , see what happens, if the AP ends up in an error state again then RMA

  M.

[radras]

Hi Mark, thanks for your answer.
Unfortunately it remains the same after reset. Thanks for letting me know