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Archive for June 8th, 2018

MC342dn | Drivers & software | OKI UK | Printers & Managed Print Services

Posted by jpluimers on 2018/06/08

For my link archive, to get firmware updates installed on my OKI MC342 printer (Mac update fails, Windows update fails, both with “Firmware update failed.”):

download support printer drivers and software utilities for your OKI printers

Source: MC342dn | Drivers & software | OKI UK | Printers & Managed Print Services

[Oki Data] The Firmware Update Utility is used to upload new firmware files to your printer.

Source: Firmware Update | OKI Global

I needed a firmware update because enabling Google Cloud Printing failed.

Source: Cloud Printing | OKI Europe Ltd – Printers, Printing Solutions and Managed Print Services

The reason was error 10a00013 which according to the Cloud Print Manual is “Connection error to the HTTP server (server authentication error). Access the website stored in the Oki Data device (http://(Oki Data device IP address)), and check the imported CA license. Alternatively, update the firmware.”

As the web page didn’t tell me about how to imported CA licenses, I have to update the firmware.


Posted in Hardware, OKI C332, OKI Printers, Power User, Printers | Leave a Comment »

Twitter / Settings – see which external applications can post on your behalf

Posted by jpluimers on 2018/06/08

If you want to investigate or limit the list of external applications that can post on your Twitter account:

via: [WayBackDuizenden Twitter-accounts misbruikt door hack TwitterCounter – IT Pro – Nieuws – Tweakers


Posted in Power User, SocialMedia, Twitter | Leave a Comment »

USB serial converters from FTDI – how to select them and get rid of fake chips

Posted by jpluimers on 2018/06/08

Be sure to read the comments at USB serial converters from FTDI are quite popular – Thomas Mueller (dummzeuch) – Google+ [WayBack] as it tells more about how to set genuine and fake FTDI chips apart (often before buying them, you cannot tell) and how to replace fake ones buy genuine ones.

Getting back to original means de-soldering fake chips, and soldering new genuine chips on the boards.

Fake chips:

  • have limited batches of the same serial (although there are ways to reprogram the serial, see links below)
    • connecting multiple adapters with the same serial causes trouble
  • are mangled by various FTDI drivers (either their PID is reset, or fake-data is inserted in the serial stream)
  • have problems operating at higher data rates

Note that the workarounds for these fake chips mean you cannot use more recent chips.

Links from Thomas’s post and other relevant links on the various kinds of genuine/fake and getting fake ones work again

Fake chips can cause you a lot of headaches – and time – sorting out communication problems: [WayBack] esptool-ck, esp8266, and FTDI Bug Hunting – vilimblog

Two years ago, this shoot-out (with results on github) had a great conclusion:

Buy either an adapter with a genuine FTDI chip, or one of the Silicon Labs CP2102 chips.

The FTDI chip is the only one attaining 3M baud rates.

Overview articles:

SiLabs chips seem to be the only without much trouble:

  • [WayBack] SiLabs CP210x USB Adapters For The Win – vilimblog
  • Review of a Generic USB RS 232/485/TTL Adapter (“Winners” branded) – YouTube:
    • Almost anything with FTDI/Prolific chips that comes from ebay/aliexpress should be assumed to be counterfeit – easy way to test this is to buy 2 and see if their serial numbers match. You don’t really want to waste your time with fake ones, you’ll end up spending more on those if you try to get them for as cheap as possible. Itead sells an adapter for 6.8 USD with genuine FT232RL chips, but they aren’t in as convenient dongle form factor, but might be worth more than your own time replacing fake chips with genuine ones.Although not mentioned here, CH340/1 should generally be avoided, while they work fine for short periods of time, for longer use they seem to be as unreliable as the counterfeit FTDI/Prolific chips on Linux.

      I haven’t seen or recognized a fake CP210x chip yet, so my guess would be that these are generally fine no matter where you get them. One big advantage of those is the integrated voltage 3.3V regulator, which can save some space when rolling your own boards.

FTDI related:

Genuine FTDI seems to be the easiest to find:

Prolific has similar issues, driver v3.4.25.218 still works with fake chips:


Related posts where I mentioned some of the trouble with FTDI chips:

Read the rest of this entry »

Posted in *nix, Development, Hardware Development, Hardware Interfacing, Legacy Ports: COM, Linux, openSuSE, Power User, SuSE Linux | Leave a Comment »

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