Where to find a previous version of firmware?

Issue #1 @ v67 -- console respond to reset() does not always return with a >
sometimes it hangs mid response feedback. In v66 the response is consistent.

Issue #2 Unknown errors in v67 but in v66 all responses/feedbacks/warnings OK

Test code in pasted first then v66 responses and then v67 responses.
Note: I still had to duplicate the I2C setup away from the onInit() to make the code work?

/*
DS18B20 Data Logger
Rev. 1.0b
7/17/14
Espruino: v 1.3: firmware: v 66 WEB-IDE: v 45
Windows 8.1 / Chrome
Hardware: I2C 4x20 LCD, DS18B20, I2C RTC DS3231
Bugs: Memory usage leak fixed in v67

Program description:
Uses 1-wire DS18B20 for the temperature sensor.
The DS18B20 temperature is logged along with time/date to SD and LCD.
1 1-wire and 1 I2C bus is used.

Program credits:
SD data logger code snippet was used from an unknown Espruino forum member.

Note: 3.3k pull-ups for I2C LCD/RTC.
*/


var ow,sensor,lcd,rtc;
function onInit(){
ow = new OneWire(A1);
sensor = require("DS18B20").connect(ow);
sensor.setRes(12); 
digitalWrite([LED1,LED2,LED3],0b100);
lcd = require("HD44780").connectI2C(I2C1);
I2C1.setup({scl:B8,sda:B9});
lcd.clear(); 
setTimeout("digitalWrite([LED1,LED2,LED3­],0b010);", 1000);
setTimeout("digitalWrite([LED1,LED2,LED3­],0b001);", 2000);
setTimeout("digitalWrite([LED1,LED2,LED3­],0);", 3000);
// Delay start-up for diagnostics (above) and for LCD clear
I2C1.setup({scl:B8, sda:B9});
rtc = require("DS3231").connect(I2C1);
// stop noise on A10 ?
pinMode(A10,'input_pullup');  
}


var fs = require('fs');
var testName    = "TEST152Q.LOG";
var testDetails = "Data Logging DS18B20 to SD";
var logInterval = 5000;
var logEntry    = 0;



/* Set Dow Time/date - comment out lines out below after first use!
Usage:
rtc.setDow("day of the week") Monday,Tuesday ...
rtc.setDate(date,month,year);1-31,1-12,0­-99
rtc.setTime(hours,minutes); Military Time 
Set time exactly on minute roll-over (+ 1  min)
*/

//rtc.setDow("Thursday");
//rtc.setDate(26,6,14);
//rtc.setTime(19,25); 


ow = new OneWire(A1);
sensor = require("DS18B20").connect(ow);

lcd = require("HD44780").connectI2C(I2C1);
I2C1.setup({scl:B8,sda:B9});

I2C1.setup({scl:B8, sda:B9});
rtc = require("DS3231").connect(I2C1);


// Initialise log file here with header information
//console.log(testDetails); <---- do not leave in without USB (will halt)
fs.appendFileSync(testName, testDetails);

// Function to log some data every so often
setInterval(function(){
    // Indicate each time function is executed 
    digitalPulse(LED1, 1, 100);
// Log some data.
    logEntry++;
 var logString = logEntry + " " + (sensor.getTemp(true)* 1.8 + 32 + " F. ") +
    (rtc.readDateTime()) + " "  + "\r\n";
  
    //console.log(logString); <---- do not leave in without USB (will halt)
    //console.log(process.memory().usage); <--- do not leave in without USB (will halt)
    fs.appendFileSync(testName, logString);
    lcd.setCursor(0,0);
    lcd.print("DS18B20 Logging ..."); 
    lcd.setCursor(0,1);
    // lcd needs a string
    lcd.print("TempF: " + new String(sensor.getTemp(true)*1.8 + 32));
    lcd.setCursor(0,2);
    lcd.print(rtc.readDateTime());
    lcd.setCursor(0,3);
    lcd.print(new String(process.memory().usage));
    lcd.print(" ");
    lcd.print(new String(Serial1.available()));
    
}, logInterval);

onInit();

---

---

reset();
=undefined

---

| |_ ___ ___ _ ||___ ___
| |_ -| . | _| | | | | . |
||| || |_|||_|_|

      |_| http://espruino.com

1v66 Copyright 2014 G.Williams
echo(0);
WARNING: I2C device not responding
WARNING: I2C device not responding
WARNING: I2C device not responding
WARNING: I2C device not responding
WARNING: I2C device not responding
WARNING: I2C device not responding
=undefined
save()
=undefined
Erasing Flash.....................
Programming 36000 Bytes...................................­....
Checking...
Done!
Running onInit()...

---

---

reset();
=undefined

---

| |_ ___ ___ _ ||___ ___
| |_ -| . | _| | | | | . |
||| || |_|||_|_|

      |_| http://espruino.com

1v67 Copyright 2014 G.Williams
echo(0);
Uncaught Error: I2C device not responding
at line 2 col 7
4,e,e])}

   ^

in function "a" called from line 1 col 8
{a(51,1);a(50,1);a(40,1);a(12,1);a(6,1);­a(1,1);return{write:...

    ^

in function "f" called from line 2 col 9
4,e,e])})}

     ^

in function "connectI2C" called fromuline 1 col 41
lcd = require("HD44780").connectI2C(I2C1);

                                     ^

=undefined