Wiznet

WIZnet WizFi360

This chip for wireless and wired networking is found in both the F256Jr.2 and F256K2.

Updating the firmware

Note from Stef: apparently not all modules are updated equal (one thought that by buying the latest module would == Latest Firmware) but unfortunately it isn't the case.

1) Get a cable like this (USB to Serial Interface, DTECH 3ft 3.3V USB to TTL Serial Adapter Debug Cable TX RX Signal 4 Pin Female Socket PL2303 Prolific Chip Windows 10 8 7 XP Vista) https://www.amazon.ca/dp/B08G1JTN4N?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_1&th=1

2) Connect the cable the following way:

• 

  The firmware updating pins near the CR2032 battery on the F256K2 (black revision) board

• 

  3 leads from USB cable connected on the SP2 pin header adjacent to the Wiznet chip

• 

  Pins for the WizFi360 on the Jr.Jr.

3) Download the latest firmware from here: https://github.com/wizfi/Release/tree/master/Binary

4) Download the wizfi360 manual from: https://github.com/Mu0n/F256MiscGoodies/tree/main/datasheets

5) Download Tera Term 5 from: https://github.com/TeraTermProject/teraterm/releases

6) Follow the instruction in the manual page (page 4 and on)

Connect your cable

• White Lead to the SP2 3 pins Header (RxD) (next to the CR2032 battery)
• Black Lead to the middle post (gnd)
• Green lead to the third pin (TxD)
• Short the J16 empty header footprint and leave it there (CN1 on the Jr.Jr. - just below the WizFi header pins)

• 

  The J16 header footprints are near the WizFi360 chip.

• In Tera Term, establish a Serial connection (according to the right COM port that is associated with this USB cable) and set it to 115,200
• In Tera Term, press and hold ESC
• Power On the unit
• You should see some 'CCCCC...' in Tera Term, let go of ESC when you do and remove the shorting cable from the J16 header footprint.
• then do a Xmodem transfer with latest firmware, wait until it tells you that the module is ready...
• Power off the unit
• Disconnect the cable
• It should be updated!