Reverse Engineering Motorola Iridium 9505

I’ve started taking apart a Motorola 9505.

As I noted in a previous post, upgrading the firmware in the 9505 (not the 9505A) is very difficult to impossible.

I was looking into the possibility of a DIY, but it’s looking a bit difficult. Some bits I’ve found out about the 9505:

  • Uses a custom ASIC from Atmel, the at56406
  • Several custom Motorola parts
  • Exposes a FFC on the rear for debugging similar to the Motorola 9500
  • Has a ton of what appear to be debug pads on the main circuit board that are covered with tape.
RF parts from Raytheon seem mostly identical to the 9500.

May try to get a JTAGulator hooked up to this and see what I can see.

From here:
*#06# IMEI
*#300# software versiom
*#301# keypad functions
*#303# set defaults
*#304# engineering mode
19980722 Ok master unlock code

Nutrition and Chronic Disease

I figured I’d drop a quick promo for my work in the nutrition field outside this blog. This is my nutrition presentation I gave at Google this past May:

I’ve also started a purely for fun venture to investigate the root cause of chronic disease, called Root Causing Health. There’s a great intro of our work on Carnivore Cast here, as well as a Patreon link for those who want to support our lab equipment acquisition 🙂

A lot of my nutrition and health blog-ness will be posted on that forum moving forward.

Copying recordings to the computer from the Zoom iQ6 HandyRecorder or HandyRec App

I purchased the Zoom iQ6 XY microphone for my iPhone to use it for audio recording purposes (I used it as a backup recorder for my recent nutrition talk — at 60 seconds the in-room recording dropped out and I had to switch to the Zoom feed which is why the audio changes at that point).

However, the app that you have to use is so shitty that it doesn’t provide a way to copy the file off of your phone. It provides:

  1. Email functionality: app won’t let you email files larger than 25MB.
  2. Sound Cloud export functionality: soundcloud doesn’t accept large files in uncompressed format.

If you’re like me, you discovered this after making an important recording and now need some way of accessing your files.

Use a backup explorer

I installed a backup explorer which allowed me to view the files that each app stores on the phone.

  1. Connect your phone over USB to your computer, authorize computer etc.
  2. Open the backup explorer. (You don’t need to make a backup for this)
  3. Navigate to the HandyRec app folder.
  4. You should see the WAV file that you recorded inside this folder.
  5. Copy the file to the computer

It’s a bit of a brutal hack but it makes this app usable. I would think twice about purchasing this device if you haven’t already due to this limitation, but I will admit that it’s handy.

Firmware upgrade on the Motorola Iridium 9505 Original Version

I thought I’d write a quick post on the firmware upgrade situation for the Iridium 9505 (not the 9505A) as there was a lack of reliable information online.

Apparently, upgrading the 9505A is as simple as plugging it into the computer and running a little program. You might be fooled into believing it would be the same way with the earlier 9505 — WRONG! Continue reading Firmware upgrade on the Motorola Iridium 9505 Original Version

Another day, another low quality meta-analysis on red meat and cancer

As luck would have it, a perfectly good Friday draws to a close with this gem a of a meta-analysis dropped into my cybersphere titled Consumption of red and processed meat and breast cancer incidence: A systematic review and meta‐analysis of prospective studies.

It’s a bit…uh…”fun” so I’m going to go over it some detail for my science friends.

Disclosure: I follow a carbohydrate-restricted diet, and tend to eat a lot of these foods which are purported to cause cancer. I tend to view most published literature, especially non-RCT statistical analyses based on Food Frequency Questionnaires with weak strength, with an air of skepticism.
Continue reading Another day, another low quality meta-analysis on red meat and cancer

16mm film! Experience with Cinelab scanning my film school project

I’ve been a film geek for a while, and one of my bucket list items was to shoot on real motion picture film. When I saw that I could apply the Intro to Film-making course at the SMFA to my engineering degree, I decided to take the plunge. The class was actually a nightmare to attend, mostly due to its distance from the main campus requiring 40 minute bus rides every Monday with a heavy-footed driver, the timing leaving little opportunity to get food during my already-packed Monday schedule. But it was quite fun! Continue reading 16mm film! Experience with Cinelab scanning my film school project

Fun and Focus with the Nikon 135mm F2 DC AF-D

When I was a wee lad I followed Ken Rockwell’s website. I always used to salivate over the more expensive Nikon lenses as I puttered around with my kit lens on the D90, a crappy 70-300mm tele that ended up stolen, and at long last at the end of high school an 80-200mm F2.8 AF-D.

The one lens I was always super excited to try was the 135mm F2 DC. Often called “the” portraiture lens, it’s a relic from the bad old days of film photography in 1990 when men were men and Nikon still made lenses out of metal and used the old style screw autofocus. Continue reading Fun and Focus with the Nikon 135mm F2 DC AF-D

Credit Cards: How they get you and how to game them right back

Today’s lesson is on the spoils of my experiments opening 17 credit cards. I always recommend my friends open credit cards due to the lucrative possibilities they entail, including rewards and what amounts to a free ~30 day loan on all purchases. They serve the added bonus of boosting your credit score when used properly to save you money on home or auto loans down the road. This tutorial is targeted to beginner and intermediate credit card aficionados. (Full time credit card churning pros probably know all this already 😉 Continue reading Credit Cards: How they get you and how to game them right back