I was having some problems with this device, so i decided to flash it. I have a couple more of tp-links plcs, and i upgraded the firmware to other device a time ago without any problem.

I downloaded the version that match my unit, taking care of EU V4, number... and flashed it using the tpPLC tool.

https://static.tp-link.com/2019/201904/20190428/TL-WPA4220(EU)_V4_190326.zip

But! i received a "failed" message, and the unit stop working completly by the ethernet cable i had it connected.

Buttons are not working, leds light in loops...

I replaced the device by a working one, and connected the broken one next to it... opened wireshark, added manually the device to the tpPLC tool.. and yeah, it is recognized as a remote device sending and receving homeplug av packets! I can see the packets associated to the MAC address on wireshark! So it is "working".

I can edit the name, i can change the config of the device, i can try to reflash the firmware... but it ask me for NVM and PIB files, not the BIN. I guess it got an error flashing and lost capacity to detect which device it is and what type of files it requires. It requires the base firmware first...

I contacted support, but didn't get a solution yet.

I investigated a bit, and i see the BIN file contains a linux structure inside and 7z alert me there is a payload apart of the zipped files. Then i checked in ascii the file, and i found it:

fwup-ptn os-image base 0x181d5 size 0xd5b1a    
fwup-ptn file-system base 0xedcef size 0x375001    
fwup-ptn partition-table base 0x00800 size 0x00800    
fwup-ptn soft-version base 0x462cf0 size 0x00015    
fwup-ptn support-list base 0x462d05 size 0x00055    
fwup-ptn profile base 0x462d5a size 0x000c1    
fwup-ptn default-config base 0x462e1b size 0x00479    
fwup-ptn default-nvm base 0x463294 size 0x60fd9    
fwup-ptn default-pib base 0x4c426d size 0x0264d    
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partition fs-uboot base 0x30000 size 0x30000
partition os-image base 0x60000 size 0x100000
partition file-system base 0x160000 size 0x4a0000
partition extra-para base 0x680000 size 0x01000
partition product-info base 0x690000 size 0x01000
partition partition-table base 0x6a0000 size 0x02000
partition soft-version base 0x6b0000 size 0x01000
partition support-list base 0x6b1000 size 0x01000
partition profile base 0x6b2000 size 0x08000
partition user-config base 0x6c0000 size 0x10000
partition default-config base 0x6d0000 size 0x10000
partition default-nvm base 0x6e0000 size 0x80000
partition default-pib base 0x760000 size 0x80000
partition default-mac base 0x7e0000 size 0x00020
partition pin base 0x7e0100 size 0x00020
partition device-id base 0x7e0200 size 0x00030
partition default-region base 0x7e0300 size 0x00010
partition radio base 0x7f0000 size 0x10000

Seems like the BIN file is a type of packet of files, with some structure...  don't know from where these offsets counts (i imagine fwup-ptn are offsets and lengths in the .BIN file and partition list the target address where that should be written)

But i would like to stop messing up with this and get support, i need the NVM / PIB files to try to flash this device.

Thank you in advance.