Category Archives: tips & tricks

fixed : macOS Sierra downloaded but installer won’t run

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Question :

Since the latest version of OSX (entitled “macOS Sierra) has been yesterday, I wanted to install it on my Mac. I clicked on “download” in the Mac AppStore and  the download started ; on the dedicated product page I could see the status bar filling up and finally stating “downloaded”… but then, nothing happened…

The download wouldn’t install…

I re-checked if macOS Sierra does support my Mac, it does. So I tried restarting the AppStore-app, I tried logging out my iCloud/AppStore-account & than logging back in, I tried rebooting my Mac, I tried rebooting in SafeMode, I tried FirstAid in the Disk Utility app, I tried clicking 10 times on the “downloaded” button repeatedly, I tried installing the DeBug-menus & cleaning the AppStore cache, I tried deleting the hidden AppStore downloads folder… and I tried various command line solutions found online in the Terminal app… nothing helped… I am still stuck with the button under the macOS Sierra icon saying “downloaded”… and nothing happens…

What can I do ?

 

Answer :

You are probably not (really) going to like this answer, because this will set you back hours & hours, in which you can’t use your Mac ; but it’s the only way known to solve this, and you need to have a recent TimeMachine backup (or alike) for it :

  1. shut down your Mac
  2. disconnect all cables  from your Mac (except your keyboard & mouse if you haven’t got a MacBook)
  3. restart your Mac, and be quick to press the [CMD]+[R] key-combo during startup (your Mac will now start up in Recovery Mode)
  4. in the “OS X Utilities” window that appears, select Restore From TimeMachine Backup and click Continue
  5. in the next “Restore Your System” window, click Continue
  6. now first make sure that your Mac can connect to your TimeMachine-harddisk by plugging in it’s USB-cable, plugging in your Ethernet-network-cable or connect to your WiFi router
  7. then select the hard drive that has your TimeMachine backups on it and click Continue
  8. in the next window, make sure you select the most recent backup that is from before you tried to download macOS Sierra ; only if you’re sure you’ve selected the right backup, proceed and click Continue
  9. now wait (or do something more useful in the mean time) and wait and wait ; this is going to take hours and hours ; putting back a TimeMachine backup this way will go a a speed of about 30BG per hour, so if your hard drive is 500GB it may take you about 15 hours (yes, an entire night and an entire morning…)
  10. finally, once the TimeMachine backup-reinstall is done, your Mac will restart… just let it
  11. then, when logged in, open the Mac AppStore-app and notice that the button under the macOS Sierra now says “download” ; click on it
  12. after the download has completed, you should now see the installer window popup on your screen… proceed from there…

that’s it… it’s simple, but very time-consuming…

enjoy !

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fixed : black screen when trying to take a photo in iOS

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Question :

Lately, whenever I try to take a photo with my iPhone, all I get is a black screen.

I am using the pre-installed Camera-app in iOS.

How can I get this fixed ?

 

Answer :

There are two known software causes for this ‘black screen’-issue (so apart from hardware problems like broken iPhones) :

solution  #1 :

If you have just used your camera in another app (e.g. WhatsApp) and you then switched to the  standard iOS Camera.app, you might run into a black screen because the camera is still being claimed by the previous app…

The fix for this is easy : close down the iOS Camera.app and the other app that was using your camera, then re-open the iOS Camera.app ; to do so :

  1. double-clicking on the Menu-button below the screen (in the next view you’ll be able to browse through windows of all open apps)
  2. close all apps that are using your iPhone’s camera (by swiping the windows of those apps you want to close upward)
  3. then return to normal view by clicking the Menu-button once
  4. and when done, re-open the iOS Camera-app

solution #2 :

The black screen issue in Camera.app has been reported as a bug in earlier versions of iOS 9, so fixing it is simply done by updating your iPhone to the latest version of iOS 9 (or iOS 10).

To do so :

  1. on your iPhone, go to Settings –> General –> Software Update
  2. you will most likely see that you don’t have the latest version of iOS
  3. activate the update to the latest version of iOS

…that’s it 😉

enjoy !

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fixed : trackpad not responding when clicking

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Question :

I had left my MacBook Pro (Late 2008 running OSX 10.11 El_Capitan) running and had forgotten all about it… after completely recharging everything seemed to be okay on first sight, but it turned out that even though I could use the (internal) trackpad to move the cursor, I wasn’t responding at all to any clicking on it. I therefore had to connect a USB-mouse. Even after restarting, the trackpad was responsive to moving the cursor, but not to clicking…

Is my MacBook’s trackpad broken ? Or is there a software solution I could try ?

 

Answer :

Even tough it’s not possible to completely rule out the scenario that your trackpad is broken, chances are you will be able to get it working properly again by an action that is normally referred to as “Resetting the PRAM”. Here’s how to do that :

  1. shut down your MacBook
  2. take out all cables and USB-sticks (this is just to rule out complications)
  3. restart your MacBook using the POWER-button
  4. immediately press and hold the key-combo [CDM]+[ALT]+[P]+[R]
  5. make sure you do so while the screen is still black
  6. when the screen lights up in light grey, you’ll hear the startup-chime
  7. now release all your fingers from the keyboard before the Apple-logo appears
  8. let your MacBook startup fully, then test if all works as expected
  9. then reconnect any cables and USB-sticks needed

Note : no worries if you act too slowly or too quickly ; if you are too late to press the key-combo, just let your MacBook startup, then shut down and try again ; if you keep pressing the key-combo for too long, you will hear the startup-chime multiple times (you will have reset your PRAM multiple times, but that’s no problem) so just release the keyboard, and just let your MacBook startup and you’re done… 😉

If the problem persists, you might have an ‘exploded battery’ problem. To check this, see if your trackpad is appearing to bulb out of it’s bezel/housing. If that is the case, you probably need to replace the battery to fix this problem. For most MacBooks and MacBook Pro’s from 2012 and older this is something you can do yourself. Some of these models have a battery-lid that can easily be opened, some models need a little unscrewing. (note : MacBook Airs and more recent MacBooks and MacBook Pros have batteries that are really hard to replace, but that doesn’t mean it can’t be done in most cases.) The main problem will be that you need to find the right replacement battery. Amazon has replacement batteries available for most MacBooks and MacBook Pros, don’t mind if it’s not an official Apple battery, read the reviews to make your final choice, because often the imitation batteries are better than the refurbished ones. Here’s a link to one of the most common of these batteries :

replacement battery for 13″ MacBook Pro versions ‘Mid 2009’ to ‘Mid 2012’

enjoy !

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fixed : how to charge Xiaomi Mi Band Pulse ?

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Question :

The Xiaomi Mi Band Pulse seems a great product, but I can’t get it to work.
It seems to come straight from Asia, as the user manual is in Chinese only.
Luckily scanning the QR-code that’s in de manual downloaded the Mi Fit-app, and since the app is in English figuring out how it works was easy.

Only problem was that the app doesn’t include directions on knowing how to charge and when the battery is full…

…the battery pre-charge it came with lasted for less than an hour, so it turned out that the first thing I have to do is charge it…

How do I know ? How can I check ?

 

Answer :

The Xiaomi Mi Band Pulse (a.k.a. Xiaomi Mi Band 1S) is a very high-value-for-money activity tracker indeed. It’s not an extremely accurate top-quality activity monitor, sleep monitor or heart rate monitor, but at this moment it can be considered as the best low-budget activity tracker for people who would normally use the iOS Health app because they want to stimulate themselves into moving or exercising more and want to keep track of their activity during swimming, sporting, exercising and sleeping, even when they can’t keep their iPhones with them.

Secret Trick #1 : Charging :

  • just take the sensor from the bracelet
  • put it in the USB-charging cable the right way round
  • hook it up to a powered USB-port or charger (not included)
  • wait for all 3 leds to light up continuously

Secret Trick #2 : The Missing Manual :

Secret Trick #3 : resetting the Mi Band Pulse / Mi Band 1S :

Secret Trick #4 : try the continuous heart rate app also :

Secret Trick #5 : use it with the iOS Health app also :

  • install the Mi Fit app first and make sure it works with your iPhone
  • then, open the Health app on your iPhone
  • in the Dashboard screen, click on the “Sources” button on the bottom side
  • on the next page click on “Mi Fit”
  • then on the next page choose which data you want to sync between Health app and Mi Fit app
  • then click “Health Data” at the bottom, next to “Sources”
  • then repeat the following for each type of data you want to exchange between the Mi Fit app and Health app :
    • for Sleep Analysis sharing, choose “Sleep” –> “Sleep Analysis” –> “Show on Dashboard” & “Share Data” –> “DATA SOURCES: Mi Fit” –> delete any individual data that you don’t want taken into account
    • for Weight sharing, choose “Body Measurements” –> “Weight” –> “Show on Dashboard” & “Share Data” –> “DATA SOURCES: Mi Fit” –> delete any individual data that you don’t want taken into account
    • for Heart Rate sharing, choose “Vitals” –> “Heart Rate” –> “Show on Dashboard” & “Share Data” –> “DATA SOURCES: Mi Fit” –> delete any individual data that you don’t want taken into account

That’s it 😉

enjoy !

Note/update : there seems to be a German language unofficial manual for the similar Mi Band (so not the Mi Band S1 Pulse), that you can get here :

Xiaomi Mi Band – Anleitung, Tipps & Tricks – das inoffizielle Handbuch

A preview excerpt of this book (which might give you some answers also) can be found here :

Google Books preview – Xiaomi Mi Band – Anleitung, Tipps & Tricks – das inoffizielle Handbuch

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fixed : Xiaomi Mi Band Pulse seems bricked or broken

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Question :

As I was fiddling with connecting to a bluetooth speaker, the connection to my Xiaomi Mi Band Pulse suddenly vanished. Even though my iPhone can still see the Mi Band, but it says “Can’t connect to band” and on manual retry connection cannot be established due to a time-out error. In Bluetooth Preferences the Mi Band is visible, but not connected, and on manual retry I also get no connection due to a time-out error.

Is my Mi Band bricked or broken ? If not, what is the right way to reconnect my Mi Band to my iPhone ?

 

Answer :

You are probably in luck as even when your Mi Band seems bricked or broken, is most of the time just hangs and can be fixed doing a reset.

The reset & reconnect procedure in short :

  • switch-off Bluetooth
  • reset the Mi Band
  • reboot your iPhone
  • switch-on Bluetooth
  • reconnect via Bluetooth

That probably isn’t enough info, so here’s a step-by-step walk-through :

  • on your iPhone, swipe-up from the bottom of the screen to get the ‘underwater’ Settings pull-up panel
  • click on the Bluetooth-icon in a white circle, which will then turn grey, indicating Bluetooth is OFF
  • now take the sensor-pod of the Mi Band Pulse out of the bracelet and put it in the refrigerator (yes, the one in your kitchen, but not in the freezer)
  • leave it there for at least one hour (officially that should be at least 4 hours, but experience shows that only one hour will also do most of the time…)
  • first, do a reboot of your iPhone by pressing the MENU- and ON/OFF-buttons at the same time until the screen goes black and a white Apple-logo is displayed [ NOTE : for some iPhones the reboot procedure (a.k.a. “hard reset”) is slightly different ; more info can be found here ]
  • when the iPhone comes back up, type your access code to unlock your iPhone
  • then swipe-up from the bottom of the screen, and in the pull-up Settings panel, click on the Bluetooth-icon in a grey circle, which will then turen white, indicating Bluetooth is ON
  • and open the MiFit-app on your iPhone
  • then, take the Mi Band sensor-pod out of the fridge and plug it in the Mi Band-charger cable and put the USB-end into a USB power adapter (a powered USB-port will also do most of the time)
  • now be quick : only during the blinking of a LED on the Mi Band sensor-pod you have the opportunity to reconnect !
  • while the LED blinks, in the Mi Fit-app, in the Status view, click on reconnect to re-establish the Bluetooth-connection between Mi Band and iPhone
  • if all orange-collored texts are gone from the Mi Fit-app, you have successfully reconnected, if not : just unplug & replug the Mi Band sensor-pod, try again and make sure you act quickly
  • everything should now work properly ; enjoy !

If you can’t get it to work using the above procedure, just try again. And if that still doesn’t help after several tries, try these versions of the procedure, in this order :

  1. try again, without putting the Mi Band sensor-pod in the refrigerator
  2. try again, exactly as described (so including the refrigerator procedure)
  3. try again, now keeping the Mi Band sensor-pod in the fridge for at least 4 hours
  4. try again, now keeping the Mi Band sensor-pod in the fridge overnight
  5. try again, but start with deleting the MiFit-app from your iPhone, and reinstall it after reboot
  6. try again, exactly as described

You probably have things up and running by then, but if you’ve done all this and it still doesn’t work, your Mi Band sensor-pod is probably broken and you should contact your reseller for a replacement…

Good Luck & enjoy !

 

Note/update : there seems to be a German language unofficial manual for the similar Mi Band (so not the Mi Band S1 Pulse), that you can get here :

Xiaomi Mi Band – Anleitung, Tipps & Tricks – das inoffizielle Handbuch

A preview excerpt of this book (which might give you some answers also) can be found here :

Google Books preview – Xiaomi Mi Band – Anleitung, Tipps & Tricks – das inoffizielle Handbuch

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fixed : QD520 IP-cam power adapter missing – which specs ?

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Question :

I bought myself a very good-value-for-money IP-cam that is called the QD520, only to find out no power adapter was included in the packaging. What are the specs of the official power adapter and where can I get one ?

 

Answer :

The QD520 IP-cam is sold under various brand names, including :

  • Escam QD520
  • Vigica QD520
  • Crenova QD520
  • RioRand QD520
  • iCatch IT-MC7101E
  • iCatch IA-MC7101E

 

The specs of the original adapter for this QD520 IP-cam are :

  • AC/DC adapter
  • model : SP-888
  • input : 100-240V AC 50/60Hz 0.3A
  • output : 12V DC 1A
  • tip : 5.5mm outside / 2.1mm inside
  • polarity : center positive ( minus = corona / plus = tip )

CenterPositive-CenterNegative

These adapters are available here :

QD520 power adapter US-version @ Amazon.com

QD520 power adapter UK-version @ Amazon.co.uk

QD520 power adapter EU-version @ Amazon.de

 

Good Luck !

enjoy 😉

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fixed : Scanmarker app icon is very pixelated

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UPDATE : an updated version of this post can be found here ; it features an all-new custom made icon !

 

Question :

I have recently bought an Scanmarker Air scanner-pen. Seems like a great device. I’ve also installed the OSX-app. Strange thing is that the app’s icon is very pixelated.

How can I change that ?

 

Answer :

The official icon of the current Scanmarker app for OSX is still a 32x32pixels icon, which is a very old that shouldn’t be used in OSX (where 152x152pixels icons are standard).

Simplest way to fix this is to download an appropriate icon of higher resolution and paste that onto the app. Here’s how to :

  • either download the original icon here (still fuzzy since it is a 300x300pixels icon enlarged to OSX-native 152x152pixels) :  Scanmarker Android app icon
  • or download the icon of the iOS app here : ScanmarkerAir iOS icon
  • or download the diap desktop icon here :ScanmarkerAir OSX icon
  • after downloading your preferred icon, do this :
  • select the Scanmarker app in your Applications folder
  • press [CMD]+[I] to open the “Info” popup menu
  • then click on the icon (top left) and a blue outline will open around it
  • then open the file (with the icon as a picture) you’ve just downloaded in Preview
  • in Preview press [CMD]+[A] to select the entire image
  • then return to the Info-popup window, and press [CMD]+[V] to paste the new icon
  • now your Scanmarker app has a better looking icon
  • to make sure it also shows on the Desktop, delete the old Scanmarker alias from the Dock, then open the Scanmarker app again and right-click on it’s icon in the Dock and select “Keep in Dock” from the popup menu

That’s it !

enjoy 😉

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