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I'm in the same situation, also lost my internal Bluetooth port after using Zadig and not been able to restore it. Bought an external BT dongle, but pairing is not working on my Win 8.1, on Win 10 pairing is successful, but as that's a 32-bit system I'm out of luck there as well...
Waiting for @Gordon to return from his well deserved break to hopefully be able to help

• I installed Python and VisualStudio to the Win-32 machine
  
• Run 'npm install -g espruino-web-ide' which now was successful.
  
• Paired from within Win-10 to one of the pucks.
  
• Run 'espruino-server' which gives the message further below about 'noble' module and no node.js
  
• Tried in another command window 'espruino --list', but it didn't find any ports to connect to.
  
  

==> Still stuck but perhaps this helps in troubleshooting

C:\Users\Admin>"C:\Program Files\nodejs\node.exe" "C:\Users\Admin\AppData\Roaming\npm\node_modules\espruino-web-ide\server.js" 
'noble' module couldn't be loaded, no node.js Bluetooth Low Energy
 { Error: LIBUSB_ERROR_NOT_SUPPORTED
    at Error (native)
    at Device.usb.Device.open (C:\Users\Admin\AppData\Roaming\npm\node_modules\espruino-web-ide\node_modules\usb\usb.js:33:7)
    at BluetoothHciSocket.bindUser (C:\Users\Admin\AppData\Roaming\npm\node_modules\espruino-web-ide\node_modules\bluetooth-hci-socket\lib\usb.js:73:19)
    at BluetoothHciSocket.bindRaw (C:\Users\Admin\AppData\Roaming\npm\node_modules\espruino-web-ide\node_modules\bluetooth-hci-socket\lib\usb.js:28:8)
    at Hci.init (C:\Users\Admin\AppData\Roaming\npm\node_modules\espruino-web-ide\node_modules\noble\lib\hci-socket\hci.js:99:35)
    at NobleBindings.init (C:\Users\Admin\AppData\Roaming\npm\node_modules\espruino-web-ide\node_modules\noble\lib\hci-socket\bindings.js:83:13)
    at new Noble (C:\Users\Admin\AppData\Roaming\npm\node_modules\espruino-web-ide\node_modules\noble\lib\noble.js:50:18)
    at Object.<anonymous> (C:\Users\Admin\AppData\Roaming\npm\node_modules\espruino-web-ide\node_modules\noble\index.js:4:18)
    at Module._compile (module.js:570:32)
    at Object.Module._extensions..js (module.js:579:10) errno: -12 }
Fri Dec 23 2016 18:41:38 GMT+0200 (FLE Standard Time) Server is listening on port 8080

Ok, hopefully someone chimes in with some help. I can create another post, but to be honest I'm not sure what I really would ask for... there are so many new bits and pieces for me to understand.

Thanks @Gordon for trying!
Node (LTS) installed successfully
Unfortunately it seems that the npm-installation part is not successful, is Python needed as there's an error message related to that?

Here's the result of the installation:

C:\Users\Admin>npm install -g espruino
C:\Users\Admin\AppData\Roaming\npm\espruino -> C:\Users\Admin\AppData\Roaming\npm\node_modules\espruino\bin\espruino-cli.js

> usb@1.2.0 install C:\Users\Admin\AppData\Roaming\npm\node_modules\espruino\node_modules\usb
> node-pre-gyp install --fallback-to-build

[usb] Success: "C:\Users\Admin\AppData\Roaming\npm\node_modules\espruino\node_modules\usb\src\binding\usb_bindings.node" is installed via remote

> bluetooth-hci-socket@0.5.1 install C:\Users\Admin\AppData\Roaming\npm\node_modules\espruino\node_modules\bluetooth-hci-socket
> node-gyp rebuild


C:\Users\Admin\AppData\Roaming\npm\node_modules\espruino\node_modules\bluetooth-hci-socket>if not defined npm_config_node_gyp (node "C:\Program Files\nodejs\node_modules\npm\bin\node-gyp-bin\\..\..\node_modules\node-gyp\bin\node-gyp.js" rebuild )  else (node "" rebuild )
gyp ERR! configure error
gyp ERR! stack Error: Can't find Python executable "python", you can set the PYTHON env variable.
gyp ERR! stack     at failNoPython (C:\Program Files\nodejs\node_modules\npm\node_modules\node-gyp\lib\configure.js:449:14)
gyp ERR! stack     at C:\Program Files\nodejs\node_modules\npm\node_modules\node-gyp\lib\configure.js:404:11
gyp ERR! stack     at C:\Program Files\nodejs\node_modules\npm\node_modules\graceful-fs\polyfills.js:264:29
gyp ERR! stack     at FSReqWrap.oncomplete (fs.js:123:15)
gyp ERR! System Windows_NT 10.0.14393
gyp ERR! command "C:\\Program Files\\nodejs\\node.exe" "C:\\Program Files\\nodejs\\node_modules\\npm\\node_modules\\node-gyp\\bin\\node-gyp.js" "rebuild"
gyp ERR! cwd C:\Users\Admin\AppData\Roaming\npm\node_modules\espruino\node_modules\bluetooth-hci-socket
gyp ERR! node -v v6.9.2
gyp ERR! node-gyp -v v3.4.0
gyp ERR! not ok

> serialport@4.0.7 install C:\Users\Admin\AppData\Roaming\npm\node_modules\espruino\node_modules\serialport
> node-pre-gyp install --fallback-to-build

[serialport] Success: "C:\Users\Admin\AppData\Roaming\npm\node_modules\espruino\node_modules\serialport\build\Release\serialport.node" is installed via remote

> winnus@0.0.2 install C:\Users\Admin\AppData\Roaming\npm\node_modules\espruino\node_modules\winnus
> node-gyp rebuild


C:\Users\Admin\AppData\Roaming\npm\node_modules\espruino\node_modules\winnus>if not defined npm_config_node_gyp (node "C:\Program Files\nodejs\node_modules\npm\bin\node-gyp-bin\\..\..\node_modules\node-gyp\bin\node-gyp.js" rebuild )  else (node "" rebuild )
gyp ERR! configure error
gyp ERR! stack Error: Can't find Python executable "python", you can set the PYTHON env variable.
gyp ERR! stack     at failNoPython (C:\Program Files\nodejs\node_modules\npm\node_modules\node-gyp\lib\configure.js:449:14)
gyp ERR! stack     at C:\Program Files\nodejs\node_modules\npm\node_modules\node-gyp\lib\configure.js:404:11
gyp ERR! stack     at C:\Program Files\nodejs\node_modules\npm\node_modules\graceful-fs\polyfills.js:264:29
gyp ERR! stack     at FSReqWrap.oncomplete (fs.js:123:15)
gyp ERR! System Windows_NT 10.0.14393
gyp ERR! command "C:\\Program Files\\nodejs\\node.exe" "C:\\Program Files\\nodejs\\node_modules\\npm\\node_modules\\node-gyp\\bin\\node-gyp.js" "rebuild"
gyp ERR! cwd C:\Users\Admin\AppData\Roaming\npm\node_modules\espruino\node_modules\winnus
gyp ERR! node -v v6.9.2
gyp ERR! node-gyp -v v3.4.0
gyp ERR! not ok
C:\Users\Admin\AppData\Roaming\npm
`-- espruino@0.0.30
  +-- acorn@4.0.4
  +-- es6-shim@0.35.2
  +-- escodegen@1.8.1
  | +-- esprima@2.7.3
  | +-- estraverse@1.9.3
  | +-- esutils@2.0.2
  | +-- optionator@0.8.2
  | | +-- deep-is@0.1.3
  | | +-- fast-levenshtein@2.0.5
  | | +-- levn@0.3.0
  | | +-- prelude-ls@1.1.2
  | | +-- type-check@0.3.2
  | | `-- wordwrap@1.0.0
  | `-- source-map@0.2.0
  |   `-- amdefine@1.0.1
  +-- esmangle@1.0.1
  | +-- escodegen@1.3.3
  | +-- escope@1.0.3
  | | `-- estraverse@2.0.0
  | +-- esprima@1.1.1
  | +-- esshorten@1.1.1
  | | `-- estraverse@4.1.1
  | +-- estraverse@1.5.1
  | +-- esutils@1.0.0
  | +-- optionator@0.3.0
  | | +-- fast-levenshtein@1.0.7
  | | +-- levn@0.2.5
  | | `-- wordwrap@0.0.3
  | `-- source-map@0.1.43
  +-- esprima@3.1.2
  +-- noble@1.7.0
  | +-- bplist-parser@0.0.6
  | `-- debug@2.2.0
  |   `-- ms@0.7.1
  +-- request@2.79.0
  | +-- aws-sign2@0.6.0
  | +-- aws4@1.5.0
  | +-- caseless@0.11.0
  | +-- combined-stream@1.0.5
  | | `-- delayed-stream@1.0.0
  | +-- extend@3.0.0
  | +-- forever-agent@0.6.1
  | +-- form-data@2.1.2
  | | `-- asynckit@0.4.0
  | +-- har-validator@2.0.6
  | | +-- chalk@1.1.3
  | | | +-- ansi-styles@2.2.1
  | | | +-- escape-string-regexp@1.0.5
  | | | +-- has-ansi@2.0.0
  | | | | `-- ansi-regex@2.0.0
  | | | +-- strip-ansi@3.0.1
  | | | `-- supports-color@2.0.0
  | | +-- is-my-json-valid@2.15.0
  | | | +-- generate-function@2.0.0
  | | | +-- generate-object-property@1.2.0
  | | | | `-- is-property@1.0.2
  | | | +-- jsonpointer@4.0.1
  | | | `-- xtend@4.0.1
  | | `-- pinkie-promise@2.0.1
  | |   `-- pinkie@2.0.4
  | +-- hawk@3.1.3
  | | +-- boom@2.10.1
  | | +-- cryptiles@2.0.5
  | | +-- hoek@2.16.3
  | | `-- sntp@1.0.9
  | +-- http-signature@1.1.1
  | | +-- assert-plus@0.2.0
  | | +-- jsprim@1.3.1
  | | | +-- extsprintf@1.0.2
  | | | +-- json-schema@0.2.3
  | | | `-- verror@1.3.6
  | | `-- sshpk@1.10.1
  | |   +-- asn1@0.2.3
  | |   +-- assert-plus@1.0.0
  | |   +-- bcrypt-pbkdf@1.0.0
  | |   +-- dashdash@1.14.1
  | |   | `-- assert-plus@1.0.0
  | |   +-- ecc-jsbn@0.1.1
  | |   +-- getpass@0.1.6
  | |   | `-- assert-plus@1.0.0
  | |   +-- jodid25519@1.0.2
  | |   +-- jsbn@0.1.0
  | |   `-- tweetnacl@0.14.5
  | +-- is-typedarray@1.0.0
  | +-- isstream@0.1.2
  | +-- json-stringify-safe@5.0.1
  | +-- mime-types@2.1.13
  | | `-- mime-db@1.25.0
  | +-- oauth-sign@0.8.2
  | +-- qs@6.3.0
  | +-- stringstream@0.0.5
  | +-- tough-cookie@2.3.2
  | | `-- punycode@1.4.1
  | +-- tunnel-agent@0.4.3
  | `-- uuid@3.0.1
  +-- serialport@4.0.7
  | +-- bindings@1.2.1
  | +-- commander@2.9.0
  | | `-- graceful-readlink@1.0.1
  | +-- debug@2.5.1
  | | `-- ms@0.7.2
  | +-- lie@3.1.0
  | | `-- immediate@3.0.6
  | +-- nan@2.4.0
  | +-- node-pre-gyp@0.6.32
  | | +-- mkdirp@0.5.1
  | | | `-- minimist@0.0.8
  | | +-- nopt@3.0.6
  | | | `-- abbrev@1.0.9
  | | +-- npmlog@4.0.1
  | | | +-- are-we-there-yet@1.1.2
  | | | | +-- delegates@1.0.0
  | | | | `-- readable-stream@2.2.2
  | | | |   +-- buffer-shims@1.0.0
  | | | |   +-- core-util-is@1.0.2
  | | | |   +-- inherits@2.0.3
  | | | |   +-- isarray@1.0.0
  | | | |   +-- process-nextick-args@1.0.7
  | | | |   +-- string_decoder@0.10.31
  | | | |   `-- util-deprecate@1.0.2
  | | | +-- console-control-strings@1.1.0
  | | | +-- gauge@2.7.2
  | | | | +-- aproba@1.0.4
  | | | | +-- has-unicode@2.0.1
  | | | | +-- object-assign@4.1.0
  | | | | +-- signal-exit@3.0.2
  | | | | +-- string-width@1.0.2
  | | | | | +-- code-point-at@1.1.0
  | | | | | `-- is-fullwidth-code-point@1.0.0
  | | | | |   `-- number-is-nan@1.0.1
  | | | | +-- strip-ansi@3.0.1
  | | | | | `-- ansi-regex@2.0.0
  | | | | +-- supports-color@0.2.0
  | | | | `-- wide-align@1.1.0
  | | | `-- set-blocking@2.0.0
  | | +-- rc@1.1.6
  | | | +-- deep-extend@0.4.1
  | | | +-- ini@1.3.4
  | | | +-- minimist@1.2.0
  | | | `-- strip-json-comments@1.0.4
  | | +-- request@2.79.0
  | | | +-- aws-sign2@0.6.0
  | | | +-- aws4@1.5.0
  | | | +-- caseless@0.11.0
  | | | +-- combined-stream@1.0.5
  | | | | `-- delayed-stream@1.0.0
  | | | +-- extend@3.0.0
  | | | +-- forever-agent@0.6.1
  | | | +-- form-data@2.1.2
  | | | | `-- asynckit@0.4.0
  | | | +-- har-validator@2.0.6
  | | | | +-- chalk@1.1.3
  | | | | | +-- ansi-styles@2.2.1
  | | | | | +-- escape-string-regexp@1.0.5
  | | | | | +-- has-ansi@2.0.0
  | | | | | | `-- ansi-regex@2.0.0
  | | | | | +-- strip-ansi@3.0.1
  | | | | | | `-- ansi-regex@2.0.0
  | | | | | `-- supports-color@2.0.0
  | | | | +-- is-my-json-valid@2.15.0
  | | | | | +-- generate-function@2.0.0
  | | | | | +-- generate-object-property@1.2.0
  | | | | | | `-- is-property@1.0.2
  | | | | | +-- jsonpointer@4.0.0
  | | | | | `-- xtend@4.0.1
  | | | | `-- pinkie-promise@2.0.1
  | | | |   `-- pinkie@2.0.4
  | | | +-- hawk@3.1.3
  | | | | +-- boom@2.10.1
  | | | | +-- cryptiles@2.0.5
  | | | | +-- hoek@2.16.3
  | | | | `-- sntp@1.0.9
  | | | +-- http-signature@1.1.1
  | | | | +-- assert-plus@0.2.0
  | | | | +-- jsprim@1.3.1
  | | | | | +-- extsprintf@1.0.2
  | | | | | +-- json-schema@0.2.3
  | | | | | `-- verror@1.3.6
  | | | | `-- sshpk@1.10.1
  | | | |   +-- asn1@0.2.3
  | | | |   +-- assert-plus@1.0.0
  | | | |   +-- bcrypt-pbkdf@1.0.0
  | | | |   +-- dashdash@1.14.1
  | | | |   +-- ecc-jsbn@0.1.1
  | | | |   +-- getpass@0.1.6
  | | | |   +-- jodid25519@1.0.2
  | | | |   +-- jsbn@0.1.0
  | | | |   `-- tweetnacl@0.14.4
  | | | +-- is-typedarray@1.0.0
  | | | +-- isstream@0.1.2
  | | | +-- json-stringify-safe@5.0.1
  | | | +-- mime-types@2.1.13
  | | | | `-- mime-db@1.25.0
  | | | +-- oauth-sign@0.8.2
  | | | +-- qs@6.3.0
  | | | +-- stringstream@0.0.5
  | | | +-- tough-cookie@2.3.2
  | | | | `-- punycode@1.4.1
  | | | +-- tunnel-agent@0.4.3
  | | | `-- uuid@3.0.1
  | | +-- rimraf@2.5.4
  | | | `-- glob@7.1.1
  | | |   +-- fs.realpath@1.0.0
  | | |   +-- inflight@1.0.6
  | | |   | `-- wrappy@1.0.2
  | | |   +-- inherits@2.0.3
  | | |   +-- minimatch@3.0.3
  | | |   | `-- brace-expansion@1.1.6
  | | |   |   +-- balanced-match@0.4.2
  | | |   |   `-- concat-map@0.0.1
  | | |   +-- once@1.4.0
  | | |   | `-- wrappy@1.0.2
  | | |   `-- path-is-absolute@1.0.1
  | | +-- semver@5.3.0
  | | +-- tar@2.2.1
  | | | +-- block-stream@0.0.9
  | | | +-- fstream@1.0.10
  | | | | `-- graceful-fs@4.1.11
  | | | `-- inherits@2.0.3
  | | `-- tar-pack@3.3.0
  | |   +-- debug@2.2.0
  | |   | `-- ms@0.7.1
  | |   +-- fstream@1.0.10
  | |   | +-- graceful-fs@4.1.11
  | |   | `-- inherits@2.0.3
  | |   +-- fstream-ignore@1.0.5
  | |   | +-- inherits@2.0.3
  | |   | `-- minimatch@3.0.3
  | |   |   `-- brace-expansion@1.1.6
  | |   |     +-- balanced-match@0.4.2
  | |   |     `-- concat-map@0.0.1
  | |   +-- once@1.3.3
  | |   | `-- wrappy@1.0.2
  | |   +-- readable-stream@2.1.5
  | |   | +-- buffer-shims@1.0.0
  | |   | +-- core-util-is@1.0.2
  | |   | +-- inherits@2.0.3
  | |   | +-- isarray@1.0.0
  | |   | +-- process-nextick-args@1.0.7
  | |   | +-- string_decoder@0.10.31
  | |   | `-- util-deprecate@1.0.2
  | |   `-- uid-number@0.0.6
  | `-- object.assign@4.0.4
  |   +-- define-properties@1.1.2
  |   | `-- foreach@2.0.5
  |   +-- function-bind@1.1.0
  |   `-- object-keys@1.0.11
  +-- tar.gz@1.0.5
  | +-- bluebird@2.11.0
  | +-- fstream@1.0.10
  | | +-- graceful-fs@4.1.11
  | | +-- inherits@2.0.3
  | | +-- mkdirp@0.5.1
  | | | `-- minimist@0.0.8
  | | `-- rimraf@2.5.4
  | |   `-- glob@7.1.1
  | |     +-- fs.realpath@1.0.0
  | |     +-- inflight@1.0.6
  | |     | `-- wrappy@1.0.2
  | |     +-- minimatch@3.0.3
  | |     | `-- brace-expansion@1.1.6
  | |     |   +-- balanced-match@0.4.2
  | |     |   `-- concat-map@0.0.1
  | |     +-- once@1.4.0
  | |     `-- path-is-absolute@1.0.1
  | +-- mout@0.11.1
  | `-- tar@2.2.1
  |   `-- block-stream@0.0.9
  `-- utf8@2.1.2

npm WARN optional SKIPPING OPTIONAL DEPENDENCY: xpc-connection@~0.1.4 (node_modules\espruino\node_modules\noble\node_modules\xpc-connection):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for xpc-connection@0.1.4: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"ia32"})
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: bluetooth-hci-socket@0.5.1 (node_modules\espruino\node_modules\bluetooth-hci-socket):
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: bluetooth-hci-socket@0.5.1 install: `node-gyp rebuild`
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: Exit status 1
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: winnus@0.0.2 (node_modules\espruino\node_modules\winnus):
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: winnus@0.0.2 install: `node-gyp rebuild`
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: Exit status 1

C:\Users\Admin>npm install -g espruino >esprinst.txt
gyp ERR! configure error
gyp ERR! stack Error: Can't find Python executable "python", you can set the PYTHON env variable.
gyp ERR! stack     at failNoPython (C:\Program Files\nodejs\node_modules\npm\node_modules\node-gyp\lib\configure.js:449:14)
gyp ERR! stack     at C:\Program Files\nodejs\node_modules\npm\node_modules\node-gyp\lib\configure.js:404:11
gyp ERR! stack     at C:\Program Files\nodejs\node_modules\npm\node_modules\graceful-fs\polyfills.js:264:29
gyp ERR! stack     at FSReqWrap.oncomplete (fs.js:123:15)
gyp ERR! System Windows_NT 10.0.14393
gyp ERR! command "C:\\Program Files\\nodejs\\node.exe" "C:\\Program Files\\nodejs\\node_modules\\npm\\node_modules\\node-gyp\\bin\\node-gyp.js" "rebuild"
gyp ERR! cwd C:\Users\Admin\AppData\Roaming\npm\node_modules\espruino\node_modules\bluetooth-hci-socket
gyp ERR! node -v v6.9.2
gyp ERR! node-gyp -v v3.4.0
gyp ERR! not ok
gyp ERR! configure error
gyp ERR! stack Error: Can't find Python executable "python", you can set the PYTHON env variable.
gyp ERR! stack     at failNoPython (C:\Program Files\nodejs\node_modules\npm\node_modules\node-gyp\lib\configure.js:449:14)
gyp ERR! stack     at C:\Program Files\nodejs\node_modules\npm\node_modules\node-gyp\lib\configure.js:404:11
gyp ERR! stack     at C:\Program Files\nodejs\node_modules\npm\node_modules\graceful-fs\polyfills.js:264:29
gyp ERR! stack     at FSReqWrap.oncomplete (fs.js:123:15)
gyp ERR! System Windows_NT 10.0.14393
gyp ERR! command "C:\\Program Files\\nodejs\\node.exe" "C:\\Program Files\\nodejs\\node_modules\\npm\\node_modules\\node-gyp\\bin\\node-gyp.js" "rebuild"
gyp ERR! cwd C:\Users\Admin\AppData\Roaming\npm\node_modules\espruino\node_modules\winnus
gyp ERR! node -v v6.9.2
gyp ERR! node-gyp -v v3.4.0
gyp ERR! not ok
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: xpc-connection@~0.1.4 (node_modules\espruino\node_modules\noble\node_modules\xpc-connection):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for xpc-connection@0.1.4: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"ia32"})
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: bluetooth-hci-socket@0.5.1 (node_modules\espruino\node_modules\bluetooth-hci-socket):
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: bluetooth-hci-socket@0.5.1 install: `node-gyp rebuild`
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: Exit status 1
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: winnus@0.0.2 (node_modules\espruino\node_modules\winnus):
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: winnus@0.0.2 install: `node-gyp rebuild`
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: Exit status 1

Finally I was able to get the CSR-dongle on my 32-bit Win10-computer to pair with a Puck. @Gordon, I'd appreciate very much a 32-bit compile, I'd test it and give feedback to you

Not able to get the CSR 4.0 to work on my Win 8.1 64-bit computer, perhaps because it has built-in BT (that I don't want to disable as this is my work computer). And the built-in BT does find the Pucks, but is not successful in pairing with them...
I've been able to connect to the Pucks from my iPhone/Bluefruit, is there any similar app as the Espruino IDE that I can use to program the Pucks with from iOs (iPhone/iPad)?

Sorry, no Raspberry Pi, neither node.js developer. I have a Win 8.1 64-bit work computer, I'll try to install the BT dongle there and try. The built-in Bluetooth did find the Pucks but was not able to pair with them.

I have a 32-bit version of Windows 10 (Home) which is not supporting Web Bluetooth.
As it's 32-bit I can't use the Native Web IDE which is 64-bit. I already bought a new Bluetooth 4.0-dongle to use with my Pucks as my old Bluetooth-dongle is too old.

How can I now connect and program the Pucks from my PC using Bluetooth?